UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                   Under the Securities Exchange Act of 1934
                               (Amendment No.__)*

                         ADVENTRX Pharmaceuticals, Inc.
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                   00764X 10 3
                                 (CUSIP Number)

                               Marc Weitzen, Esq.
                                 General Counsel
                Icahn Associates Corp. & affiliated companies
                          767 Fifth Avenue, 47th Floor
                            New York, New York 10153
                                 (212) 702-4300

         (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                                  July 27, 2005
            (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of Sections 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g),
check the following box / /.

NOTE: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

                                  SCHEDULE 13D

CUSIP No. 00764X 10 3

1     NAME OF REPORTING PERSON
            High River Limited Partnership

      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                  (a) / /
                                                                  (b) / /
3     SEC USE ONLY

4     SOURCE OF FUNDS*
            WC

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(d) or 2(e)                                                   /X/

6     CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7     SOLE VOTING POWER
                  1,729,730 (including 864,865 Warrants)

8     SHARED VOTING POWER
                  0

9     SOLE DISPOSITIVE POWER
                  1,729,730 (including 864,865 Warrants)

10    SHARED DISPOSITIVE POWER
                  0

11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  1,729,730 (including 864,865 Warrants)

12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
            //
13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
            2.6%  (assuming exercise by High River Limited Partnership
                  of all its Warrants)

14    TYPE OF REPORTING PERSON*
            PN

                                  SCHEDULE 13D

CUSIP No. 00764X 10 3

      NAME OF REPORTING PERSON
            Hopper Investments LLC

      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                  (a) / /
                                                                  (b) / /
3     SEC USE ONLY

4     SOURCE OF FUNDS*
            OO

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(d) or 2(e)                                                   /X/

6     CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7     SOLE VOTING POWER
                  0

8     SHARED VOTING POWER
                  1,729,730 (including 864,865 Warrants)

9     SOLE DISPOSITIVE POWER
                  0

10    SHARED DISPOSITIVE POWER
                  1,729,730 (including 864,865 Warrants)

11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  1,729,730 (including 864,865 Warrants)

12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
            //
13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
            2.6%  (assuming exercise by High River Limited Partnership
                  of all its Warrants)

14    TYPE OF REPORTING PERSON*
            OO

                                  SCHEDULE 13D

CUSIP No. 00764X 10 3

      NAME OF REPORTING PERSON
            Barberry Corp.

      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                  (a) / /
                                                                  (b) / /
3     SEC USE ONLY

4     SOURCE OF FUNDS*
            OO

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(d) or 2(e)                                                   /X/

6     CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7     SOLE VOTING POWER
                  0

8     SHARED VOTING POWER
                  1,729,730 (including 864,865 Warrants)

9     SOLE DISPOSITIVE POWER
                  0

10    SHARED DISPOSITIVE POWER
                  1,729,730 (including 864,865 Warrants)

11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  1,729,730 (including 864,865 Warrants)

12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
            //
13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
            2.6%  (assuming exercise by High River Limited Partnership
                  of all its Warrants)

14    TYPE OF REPORTING PERSON*
            CO

                                  SCHEDULE 13D

CUSIP No. 00764X 10 3

      NAME OF REPORTING PERSON
            Icahn Partners Master Fund LP

      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                  (a) / /
                                                                  (b) / /
3     SEC USE ONLY

4     SOURCE OF FUNDS*
            WC

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(d) or 2(e)                                                   /X/

6     CITIZENSHIP OR PLACE OF ORGANIZATION
            Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7     SOLE VOTING POWER
                  3,597,838 (including 1,798,919 Warrants)

8     SHARED VOTING POWER
                  0

9     SOLE DISPOSITIVE POWER
                  3,597,838 (including 1,798,919 Warrants)

10    SHARED DISPOSITIVE POWER
                  0

11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  3,597,838 (including 1,798,919 Warrants)

12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
            //
13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
            5.3%  (assuming exercise by Icahn Partners Master Fund LP of
                  all its Warrants)

14    TYPE OF REPORTING PERSON*
            PN

                                  SCHEDULE 13D

CUSIP No. 00764X 10 3

      NAME OF REPORTING PERSON
            Icahn Offshore LP

      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                  (a) / /
                                                                  (b) / /
3     SEC USE ONLY

4     SOURCE OF FUNDS*
            OO

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(d) or 2(e)                                                   /X/

6     CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7     SOLE VOTING POWER
                  0

8     SHARED VOTING POWER
                  3,597,838 (including 1,798,919 Warrants)

9     SOLE DISPOSITIVE POWER
                  0

10    SHARED DISPOSITIVE POWER
                  3,597,838 (including 1,798,919 Warrants)

11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  3,597,838 (including 1,798,919 Warrants)

12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
            //
13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
            5.3%  (assuming exercise by Icahn Partners Master Fund LP of
                  all its Warrants)

14    TYPE OF REPORTING PERSON*
            PN

                                  SCHEDULE 13D

CUSIP No. 00764X 10 3

      NAME OF REPORTING PERSON
            CCI Offshore Corp.

      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                  (a) / /
                                                                  (b) / /
3     SEC USE ONLY

4     SOURCE OF FUNDS*
            OO

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(d) or 2(e)                                                   /X/

6     CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7     SOLE VOTING POWER
                  0

8     SHARED VOTING POWER
                  3,597,838 (including 1,798,919 Warrants)

9     SOLE DISPOSITIVE POWER
                  0

10    SHARED DISPOSITIVE POWER
                  3,597,838 (including 1,798,919 Warrants)

11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  3,597,838 (including 1,798,919 Warrants)

12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
            //
13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
            5.3%  (assuming exercise by Icahn Partners Master Fund LP of
                  all its Warrants)

14    TYPE OF REPORTING PERSON*
            CO

                                  SCHEDULE 13D

CUSIP No. 00764X 10 3

      NAME OF REPORTING PERSON
            Icahn Partners LP

      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                  (a) / /
                                                                  (b) / /
3     SEC USE ONLY

4     SOURCE OF FUNDS*
            WC

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(d) or 2(e)                                                   /X/

6     CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7     SOLE VOTING POWER
                  3,321,080 (including 1,660,540 Warrants)

8     SHARED VOTING POWER
                  0

9     SOLE DISPOSITIVE POWER
                  3,321,080 (including 1,660,540 Warrants)

10    SHARED DISPOSITIVE POWER
                  0

11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  3,321,080 (including 1,660,540 Warrants)

12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
            //
13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
            4.9% (assuming exercise by Icahn Partners LP of all its
                 Warrants)

14    TYPE OF REPORTING PERSON*
            PN

                                  SCHEDULE 13D

CUSIP No. 00764X 10 3

      NAME OF REPORTING PERSON
            Icahn Onshore LP

      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                  (a) / /
                                                                  (b) / /
3     SEC USE ONLY

4     SOURCE OF FUNDS*
            OO

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(d) or 2(e)                                                   /X/

6     CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7     SOLE VOTING POWER
                  0

8     SHARED VOTING POWER
                  3,321,080 (including 1,660,540 Warrants)

9     SOLE DISPOSITIVE POWER
                  0

10    SHARED DISPOSITIVE POWER
                  3,321,080 (including 1,660,540 Warrants)

11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  3,321,080 (including 1,660,540 Warrants)

12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
            //
13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
            4.9%  (assuming exercise by Icahn Partners LP of all its
                  Warrants)

14    TYPE OF REPORTING PERSON*
            PN

                                  SCHEDULE 13D

CUSIP No. 00764X 10 3

      NAME OF REPORTING PERSON
            CCI Onshore Corp.

      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                  (a) / /
                                                                  (b) / /
3     SEC USE ONLY

4     SOURCE OF FUNDS*
            OO

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(d) or 2(e)                                                   /X/

6     CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7     SOLE VOTING POWER
                  0

8     SHARED VOTING POWER
                  3,321,080 (including 1,660,540 Warrants)

9     SOLE DISPOSITIVE POWER
                  0

10    SHARED DISPOSITIVE POWER
                  3,321,080 (including 1,660,540 Warrants)

11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  3,321,080 (including 1,660,540 Warrants)

12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
            //
13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
            4.9%  (assuming exercise by Icahn Partners LP of all its
                  Warrants)

14    TYPE OF REPORTING PERSON*
            CO

                                  SCHEDULE 13D

CUSIP No. 00764X 10 3

1     NAME OF REPORTING PERSON
            Carl C. Icahn

      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                  (a) / /
                                                                  (b) / /
3     SEC USE ONLY

4     SOURCE OF FUNDS*
            OO

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(d) or 2(e)                                                   /X/

6     CITIZENSHIP OR PLACE OF ORGANIZATION
            United States of America

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7     SOLE VOTING POWER
                  0

8     SHARED VOTING POWER
                  8,648,648 (including 4,324,324 Warrants)

9     SOLE DISPOSITIVE POWER
                  0

10    SHARED DISPOSITIVE POWER
                  8,648,648 (including 4,324,324 Warrants)


11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  8,648,648 (including 4,324,324 Warrants)


12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
            //
13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
            12.3%  (assuming exercise by High River Limited Partnership,
                   Icahn Partners Master Fund LP and Icahn Partners LP of
                   all their respective Warrants)

14    TYPE OF REPORTING PERSON*
            IN

                                  SCHEDULE 13D

Item 1.  Security and Issuer

      This Schedule 13D relates to the Common Stock, par value $0.001 per share
(the "Shares"), of ADVENTRX Pharmaceuticals, Inc., a Delaware corporation (the
"Issuer") and warrants (the "Warrants") to acquire Shares of the Issuer. The
address of the principal executive offices of the Issuer is 6725 Mesa Ridge
Road, Suite 100, San Diego California 92121.

Item 2.  Identity and Background

      The persons filing this statement are High River Limited Partnership, a
Delaware limited partnership ("High River"), Hopper Investments, LLC, a Delaware
limited liability company ("Hopper"), Barberry Corp., a Delaware corporation
("Barberry"), Icahn Partners Master Fund LP, a Cayman Islands limited
partnership ("Icahn Master"), Icahn Offshore LP, a Delaware limited partnership
("Icahn Offshore"), CCI Offshore Corp., a Delaware corporation ("CCI Offshore"),
Icahn Partners LP, a Delaware limited partnership ("Icahn Partners"), Icahn
Onshore LP, a Delaware limited partnership ("Icahn Onshore"), CCI Onshore Corp.,
a Delaware corporation (" CCI Onshore") and Carl C. Icahn, a citizen of the
United States of America (collectively, the "Registrants"). The principal
business address and the address of the principal office of the Registrants is
c/o Icahn Associates Corp., 767 Fifth Avenue, 47th Floor, New York, New York
10153, except that (i) the principal business address of each of High River,
Hopper and Barberry is 100 South Bedford Road, Mount Kisco, New York 10549 and
(ii) the principal business address of Icahn Master is c/o Walkers SPV Limited,
P.O. Box 908GT, 87 Mary Street, George Town, Grand Cayman, Cayman Islands.

      Barberry is the sole member of Hopper, which is the general partner of
High River. CCI Offshore is the general partner of Icahn Offshore, which is the
general partner of Icahn Master. CCI Onshore is the general partner of Icahn
Onshore, which is the general partner of Icahn Partners. Each of Barberry, CCI
Offshore and CCI Onshore is 100 percent owned by Carl C. Icahn. As such, Mr.
Icahn is in a position directly and indirectly to determine the investment and
voting decisions made by the Registrants.

      Each of Icahn Master, Icahn Partners, Barberry and High River is primarily
engaged in the business of investing in securities. Hopper is primarily engaged
in the business of serving as the general partner of High River. Icahn Offshore
and Icahn Onshore are primarily engaged in the business of serving as the
general partner of Icahn Master and Icahn Partners, respectively. CCI Offshore
and CCI Onshore are primarily engaged in the business of serving as the general
partner of Icahn Offshore and Icahn Onshore, respectively. Carl C. Icahn's
present principal occupation or employment is (i) owning all of the interests in
CCI Onshore and CCI Offshore, through which Mr. Icahn indirectly directs and
manages the investments of Icahn Master and Icahn Partners and (ii) acting as
President and a director of Starfire Holding Corporation, a Delaware corporation
("Starfire"), and as the Chairman of the Board and a director of various of
Starfire's subsidiaries. Starfire is primarily engaged in the business of
investing in and holding securities of various entities.

      The name, citizenship, present principal occupation or employment and
business address of each director and executive officer of Barberry, High River,
Icahn Master, Icahn Offshore, CCI Offshore, Icahn Partners, Icahn Onshore and
CCI Onshore, are set forth in Schedule A attached hereto.

      Except as set forth on Schedule B, no member of any of the Registrants nor
any manager or executive officer of Registrants, has, during the past five
years, (a) been convicted in a criminal proceeding (excluding traffic violations
or similar misdemeanors), or (b) been a party to a civil proceeding of a

judicial or administrative body of competent jurisdiction and as a result of
such proceeding was or is subject to a judgment, decree or final order enjoining
future violations of, or prohibiting, or mandating activities subject to,
Federal or State securities laws or a finding of any violation with respect to
such laws.

Item 3.     Source and Amount of Funds or Other Consideration

On July 27, 2005, the aggregate purchase price of the 4,324,324 Shares and
4,324,324 Warrants purchased by High River, Icahn Master and Icahn Partners,
collectively, was $7,999,999.40. The source of funding for the purchase of
these Shares was the respective general working capital of the purchasers.

Item 4.     Purpose of Transaction

Registrants believe that Issuer has a potential for capital appreciation over
time and Registrants were able to acquire the Shares at a favorable price
because the acquisition was part of a private placement by Issuer of the Shares
and Warrants. Registrants were also given the right to nominate a director of
Issuer. While it continues to own securities of the Issuer, Registrants may,
from time to time, communicate with the management of the Issuer to seek to
discuss the business and affairs of the Issuer.

Registrants reserve the right to acquire additional Shares at any time and from
time to time in the open market or otherwise. In addition, Registrants may
dispose of all or any portion of the Shares held by them at any time or from
time to time in the open market (pursuant to an effective registration
statement) or otherwise.

Item 5.     Interest in Securities of the Issuer

      (a) As of August 5, 2005, Registrants may be deemed to beneficially own,
in the aggregate, 8,648,648 Shares (including 4,324,324 Warrants), representing
approximately 12.3% of the Issuer's outstanding Shares (based upon the
65,933,730 Shares stated to be outstanding by the Issuer in Form 8-K filed on
July 27, 2005), and assuming exercise by the Registrants of all Warrants).

      (b) High River has sole voting power and sole dispositive power with
regard to 1,729,730 Shares (including 864,865 Warrants). Each of Barberry,
Hopper and Carl C. Icahn may be deemed to have shared voting power and shared
dispositive power with regard to such Shares. Icahn Master has sole voting power
and sole dispositive power with regard to 3,597,838 Shares (including 1,798,919
Warrants). Each of Icahn Offshore, CCI Offshore and Carl C. Icahn may be deemed
to have shared voting power and shared dispositive power with regard to such
Shares. Icahn Partners has sole voting power and sole dispositive power with
regard to 3,321,080 Shares (including 1,660,540 Warrants). Each of Icahn
Onshore, CCI Onshore and Carl C. Icahn may be deemed to have shared voting power
and shared dispositive power with regard to such Shares.

      Each of Hopper, Barberry and Mr. Icahn, by virtue of their relationships
to High River (as disclosed in Item 2), may be deemed to beneficially own (as
that term is defined in Rule 13d-3 under the Act) the Shares and Warrants, which
High River directly beneficially owns. Each of Hopper, Barberry and Mr. Icahn
disclaims beneficial ownership of such Shares and Warrants for all other
purposes. Each of Icahn Offshore, CCI Offshore and Mr. Icahn, by virtue of their
relationships to Icahn Master (as disclosed in Item 2), may be deemed to
beneficially own (as that term is defined in Rule 13d-3 under the Act) the
Shares and Warrants, which Icahn Master directly beneficially owns. Each of
Icahn Offshore, CCI Offshore and Mr. Icahn disclaims beneficial ownership of
such Shares and Warrants for all other purposes. Each of Icahn Onshore, CCI
Onshore and Mr. Icahn, by virtue of their relationships to Icahn Partners (as

disclosed in Item 2), may be deemed to beneficially own (as that term is defined
in Rule 13d-3 under the Act) the Shares and Warrants, which Icahn Partners
directly beneficially owns. Each of Icahn Onshore, CCI Onshore and Mr. Icahn
disclaims beneficial ownership of such Shares and Warrants for all other
purposes.

      (c) The following tables set forth all transactions with respect to the
Shares effected during the past sixty (60) days by any of the Registrants,
inclusive of any transactions effected through August 5, 2005. All such
transactions were effected pursuant to the Securities Purchase Agreement, and
no commissions were paid by the Registrants in connection with such
transactions.

No. of Shares Price Name Date Purchased Per Share - ---- ---- --------- --------- High River July 27, 2005 864,865 1.85 Icahn Master July 27, 2005 1,798,919 1.85 Icahn Partners July 27, 2005 1,660,540 1.85
Item 6. Contracts, Arrangements, Understandings or Relationship with Respect to Securities of the Issuer Securities Purchase Agreement and Warrants On July 21, 2005, High River, Icahn Partners and Icahn Master (collectively, the "Purchasers") entered into the Securities Purchase Agreement (attached hereto as Exhibit 2 and incorporated by reference herein in its entirety) with the Issuer and the other entities listed on Appendix A thereto. Pursuant to Exhibit 2, on July 27, 2005, the Issuer issued to the Purchasers an aggregate of 4,324,324 Shares at a purchase price of $1.85 per Share. In addition, pursuant to Exhibit 2, on July 27, 2005, the Issuer issued, without additional consideration, to the Purchasers Warrants to purchase an aggregate of 4,324,324 Shares at an exercise price of $2.26 per Share (subject to adjustment). The Warrants are not exercisable by the Purchasers until January 27, 2006. The Warrants expire on July 27, 2012, subject to earlier termination. The Issuer also granted to the Purchasers registration rights with respect to the Shares and the Shares issuable upon exercise of the Warrants. A copy of the Warrant for each of High River, Icahn Partners and Icahn Master is attached hereto as Exhibit 3, 4 and 5, respectively, and are incorporated by reference herein in their entirety). Rights Agreement On July 27, 2005, the Purchasers entered into the Rights Agreement (attached hereto as Exhibit 6 and incorporated by reference herein in its entirety) with the Issuer, Viking Global Equities LP and VGE III Portfolio Ltd. Pursuant to Exhibit 6, the Issuer granted to the Purchasers the right to consent to any issuance of Shares at a per share price lower than $2.26 per share for up to one year (with certain enumerated exceptions). The Issuer also granted to the Purchasers the right to participate in any sale of Shares until July 27, 2012 (with certain enumerated exceptions). For so long as the Purchasers have these participation rights, the Purchasers also have the right to nominate their nominee to the Board of Directors of the Issuer. Finally, the Issuer also agreed that for so long as the Purchasers have these participation rights, the Issuer will not adopt any rights plan designed to prevent a hostile takeover or adopt a classified Board of Directors. Support Agreement On July 27, 2005, the Purchasers entered into the Support Agreement (attached hereto as Exhibit 7 and incorporated by reference herein in its entirety) with certain stockholders of the Issuer, and Viking Global Equities LP and VGE III Portfolio Ltd. Pursuant to Exhibit 7, stockholders beneficially owning 9,967,463 Shares agreed to vote all of such stockholder's Shares in favor of amendments to the Issuer's charter documents. The amendments, if approved by the stockholders, would prohibit the Issuer from adopting a rights plan designed to prevent a hostile takeover or a classified Board of Directors. Except as described herein, none of the Registrants has any contracts, arrangements, understandings or relationships (legal or otherwise) with any person with respect to any securities of the Issuer, including but not limited to the transfer or voting of any of the securities, finder's fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or losses, or the giving or withholding of proxies. Item 7. Material to be Filed as Exhibits 1. Joint Filing Agreement of the Registrants 2. Securities Purchase Agreement, dated as of July 21, 2005, among the Issuer, High River, Icahn Partners, Icahn Master and the other entities listed on Appendix A thereto. 3. Common Stock Warrant, dated July 27, 2005, issued by the Issuer in the name of High River. 4. Common Stock Warrant, dated July 27, 2005, issued by the Issuer in the name of Icahn Partners. 5. Common Stock Warrant, dated July 27, 2005, issued by the Issuer in the name of Icahn Master. 6. Rights Agreement, dated as of July 27, 2005, among the Issuer, High River, Icahn Partners, Icahn Master, Viking Global Equities LP and VGE III Portfolio Ltd. 7. Support Agreement, dated as of July 27, 2005, among the stockholders of the Issuer party thereto, High River, Icahn Partners, Icahn Master, Viking Global Equities LP and VGE III Portfolio Ltd. SIGNATURE After reasonable inquiry and to the best of each of the undersigned knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct. Dated: August 5, 2005 HOPPER INVESTMENTS LLC By: Barberry Corp. By: /s/ Edward E. Mattner --------------------------------- Name: Edward E. Mattner Title: Authorized Signatory BARBERRY CORP. By: /s/ Edward E. Mattner --------------------------------------- Name: Edward E. Mattner Title: Authorized Signatory HIGH RIVER LIMITED PARTNERSHIP By: Hopper Investments LLC, General Partner By: Barberry Corp., member By: /s/ Edward E. Mattner --------------------------------------- Name: Edward E. Mattner Title: Authorized Signatory ICAHN PARTNERS MASTER FUND LP By: /s/ Edward E. Mattner --------------------------------------- Name: Edward E. Mattner Title: Authorized Signatory [Signature Page of Schedule 13D - ADVENTRX Pharmaceuticals, Inc.] ICAHN OFFSHORE LP By: /s/ Edward E. Mattner --------------------------------------- Name: Edward E. Mattner Title: Authorized Signatory CCI OFFSHORE CORP. By: /s/ Keith Meister --------------------------------------- Name: Keith Meister Title: Authorized Signatory ICAHN PARTNERS LP By: /s/ Edward E. Mattner --------------------------------------- Name: Edward E. Mattner Title: Authorized Signatory ICAHN ONSHORE LP By: /s/ Edward E. Mattner --------------------------------------- Name: Edward E. Mattner Title: Authorized Signatory CCI ONSHORE CORP. By: /s/ Keith Meister --------------------------------------- Name: Keith Meister Title: Authorized Signatory /s/ Carl C. Icahn - ------------------------------------- CARL C. ICAHN [Signature Page of Schedule 13D - ADVENTRX Pharmaceuticals, Inc.] SCHEDULE A DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANTS Name, Business Address and Principal Occupation of Each Executive Officer and Director of Barberry, High River, Icahn Master, Icahn Offshore, CCI Offshore, Icahn Partners, Icahn Onshore and CCI Onshore. The following sets forth the name, position, and principal occupation of each director and executive officer of each of High River and Barberry. Each such person is a citizen of the United States of America. Except as otherwise indicated, the business address of each director and officer is c/o Icahn Associates Corp., 767 Fifth Avenue, 47th Floor, New York, New York 10153. To the best of Registrants' knowledge, except as set forth in this statement on Schedule 13D, none of the directors or executive officers of the Registrants own any shares of the Issuer. BARBERRY CORP. Name Position - ---- -------- Carl C. Icahn Chairman, President and Secretary Jordan Bleznick Vice President - Taxes HIGH RIVER LIMITED PARTNERSHIP Name Position - ---- -------- Hopper Investments LLC General Partner ICAHN PARTNERS MASTER FUND LP Name Position - ---- -------- Keith Meister Executive Vice President ICAHN OFFSHORE LP Name Position - ---- -------- Keith Meister Executive Vice President CCI OFFSHORE CORP. Name Position - ---- -------- Carl C. Icahn Director Keith Meister President and Secretary Vincent J. Intrieri Vice President and Treasurer Jordan Bleznick Vice President - Taxes ICAHN PARTNERS LP Name Position - ---- -------- Keith Meister Executive Vice President ICAHN ONSHORE LP Name Position - ---- -------- Keith Meister Executive Vice President CCI ONSHORE CORP. Name Position - ---- -------- Carl C. Icahn Director Keith Meister President and Secretary Vincent J. Intrieri Vice President and Treasurer Jordan Bleznick Vice President - Taxes SCHEDULE B On January 5, 2001, Reliance Group Holdings, Inc. ("Reliance") commenced an action in the United States District Court for the Southern District of New York against "Carl C. Icahn, Icahn Associates Corp. and High River Limited Partnership" alleging that High River's tender offer for Reliance 9% senior notes violated Section 14(e) of the Exchange Act. Reliance sought a temporary restraining order and preliminary and permanent injunctive relief to prevent defendants from purchasing the notes. The Court initially imposed a temporary restraining order. Defendants then supplemented the tender offer disclosures. The Court conducted a hearing on the disclosures and other matters raised by Reliance. It then denied plaintiffs' motion for a preliminary injunction and ordered dissolution of its temporary restraining order following dissemination of the supplement. Reliance took an immediate appeal to the United States Court of Appeals for the Second Circuit and sought a stay to restrain defendants from purchasing notes during the pendency of the appeal. On January 30, 2001, the Court of Appeals denied plaintiff's stay application. On January 30, 2001, Reliance also sought a further temporary restraining order from the District Court. The Court considered the matter and reimposed its original restraint until noon the next day, at which time the restraint was dissolved. The appeal was argued on March 9, 2001 and denied on March 22, 2001.

                                                                  Exhibit 1



                             JOINT FILING AGREEMENT

      In accordance with Rule 13d-1(f) under the Securities Exchange Act of
1934, as amended, the persons named below agree to the joint filing on behalf of
each of them of a statement on Schedule 13D (including amendments thereto) with
respect to the Common Stock of ADVENTRX Pharmaceuticals, Inc. and further agree
that this Joint Filing Agreement be included as an Exhibit to such joint
filings. In evidence thereof, the undersigned, being duly authorized, have
executed this Joint Filing Agreement this 5th day of August 2005.

HOPPER INVESTMENTS LLC

      By:   Barberry Corp.


            By:   /s/ Edward E. Mattner
                 --------------------------------
            Name: Edward E. Mattner
            Title: Authorized Signatory

BARBERRY CORP.


      By:   /s/ Edward E. Mattner
          ---------------------------------------
      Name: Edward E. Mattner
      Title: Authorized Signatory

HIGH RIVER LIMITED PARTNERSHIP

By:   Hopper Investments LLC, General Partner

      By:  Barberry Corp., member

      By:   /s/ Edward E. Mattner
          ---------------------------------------
            Name: Edward E. Mattner
            Title: Authorized Signatory

ICAHN PARTNERS MASTER FUND LP

      By:   /s/ Edward E. Mattner
          ---------------------------------------
      Name: Edward E. Mattner
      Title: Authorized Signatory

ICAHN OFFSHORE LP

      By:   /s/ Edward E. Mattner
          ---------------------------------------
      Name: Edward E. Mattner
      Title: Authorized Signatory

           [Signature Page of Joint Filing Agreement to Schedule 13D -
                         ADVENTRX Pharmaceuticals, Inc.]

CCI OFFSHORE CORP.

      By:   /s/ Keith Meister
          ---------------------------------------
      Name: Keith Meister
      Title: Authorized Signatory

ICAHN PARTNERS LP

      By:   /s/ Edward E. Mattner
          ---------------------------------------
      Name: Edward E. Mattner
      Title: Authorized Signatory

ICAHN ONSHORE LP

      By:   /s/ Edward E. Mattner
          ---------------------------------------
      Name: Edward E. Mattner
      Title: Authorized Signatory

CCI ONSHORE LLC

      By:   /s/ Keith Meister
          ---------------------------------------
      Name: Keith Meister
      Title: Authorized Signatory

/s/ Carl C. Icahn
- ------------------------------------
CARL C. ICAHN


           [Signature Page of Joint Filing Agreement to Schedule 13D -
                         ADVENTRX Pharmaceuticals, Inc.]

                                                                       Exhibit 2

                          SECURITIES PURCHASE AGREEMENT

                           dated as of July 21, 2005,

                                  by and among

                         ADVENTRX PHARMACEUTICALS, INC.

                                       and

               ENTITIES LISTED ON APPENDIX A (each a "Purchaser").

                                Table of Contents

Page ---- SECTION 1. PURCHASE AND SALE OF STOCK................................... 1 SECTION 2. THE CLOSING.................................................. 2 2.1. The Closing.................................................. 2 2.2. Conditions to Closing........................................ 2 SECTION 3. REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE COMPANY..... 4 3.1. No Material Misstatements.................................... 4 3.2. Incorporated Documents....................................... 4 3.3. Certain Data................................................. 4 3.4. Financial Statements......................................... 5 3.5. Book and Records; Internal Controls.......................... 5 3.6. Independent Accountants...................................... 6 3.7. Organization; Good Standing.................................. 6 3.8. Absence of Litigation........................................ 6 3.9. Brokers or Finders........................................... 6 3.10. Use of Proceeds.............................................. 7 3.11. Licenses; Leases............................................. 7 3.12. Intellectual Property........................................ 7 3.13. Real Property................................................ 8 3.14. Material Contracts........................................... 9 3.15. No Violation................................................. 9 3.16. Due Authorization and Delivery............................... 9 3.17. No Default................................................... 10 3.18. Capitalization; Liabilities.................................. 10 3.19. Lock-Up...................................................... 11 3.20. Employees.................................................... 11 3.21. Related Party Transactions................................... 11 3.22. Market Stabilization......................................... 11
i 3.23. Taxes........................................................ 12 3.24. AMEX Compliance; Listing..................................... 12 3.25. Insurance.................................................... 12 3.26. Environmental Laws........................................... 12 3.27. Investment Company........................................... 13 3.28. Solicitation; Other Issuances of Securities.................. 13 3.29. No Corrupt Practices......................................... 14 3.30. No Money Laundering.......................................... 14 3.31. No OFAC Sanctions............................................ 14 3.32. ERISA........................................................ 14 SECTION 4. REPRESENTATIONS, WARRANTIES AND COVENANTS OF EACH PURCHASER.. 15 4.1. Organization................................................. 15 4.2. Authorization, Enforcement, and Validity..................... 15 4.3. Consents and Approvals; No Violation......................... 15 4.4. Investment Experience........................................ 16 4.5. Investment Intent And Limitation On Dispositions............. 16 4.6. Information And Risk......................................... 16 4.7. Restricted Securities........................................ 17 4.8. No Obligation to Register.................................... 18 4.9. Disclosures to the Company................................... 18 4.10. Nature of Purchasers......................................... 18 4.11. Ownership.................................................... 18 4.12. Brokers or Finders........................................... 18 4.13. Acknowledgement.............................................. 18 4.14. No Short Sales............................................... 19 SECTION 5. SURVIVAL OF REPRESENTATIONS AND WARRANTIES................... 19 SECTION 6. REGISTRATION OF THE SHARES; COMPLIANCE WITH THE SECURITIES ACT....................................................... 19 6.1. Registration Procedures And Expenses......................... 19
ii 6.2. Restrictions on Transferability.............................. 23 6.3. Furnish Information.......................................... 24 6.4. Delay of Registration........................................ 25 6.5. Termination Of Conditions And Obligations.................... 25 SECTION 7. LEGENDS...................................................... 25 SECTION 8. INDEMNIFICATION.............................................. 26 SECTION 9. NOTICES...................................................... 29 SECTION 10. MISCELLANEOUS................................................ 30 10.1. Amendments................................................... 30 10.2. Headings..................................................... 30 10.3. Severability................................................. 30 10.4. Governing Law And Forum...................................... 30 10.5. Counterparts................................................. 31 10.6. Entire Agreement............................................. 31 10.7. Independent Nature Of Purchasers' Obligations And Rights..... 31 10.8. Expenses..................................................... 31
Appendix A Schedule of Purchasers Appendix B Company Counsel Opinion Appendix C Disclosure Schedules Appendix D Selling Stockholder Questionnaire Appendix E Certificate Regarding Resale of Common Stock Appendix F Form of Warrant Appendix G Form of Rights Agreement iii SECURITIES PURCHASE AGREEMENT THIS SECURITIES PURCHASE AGREEMENT (this "Agreement") is made as of the 21st day of July 2005 by and among ADVENTRX Pharmaceuticals, Inc. (the "Company"), a Delaware corporation, with its principal offices at 6725 Mesa Ridge Road, Suite 100, San Diego, California 92121, and the entities listed on Appendix A (each, a "Purchaser"). IN CONSIDERATION of the mutual covenants contained in this Agreement, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Company and the Purchasers hereby agree as follows: Section 1. Purchase and Sale of Stock and Warrants. Subject to the terms and conditions of this Agreement, on the Closing Date (as defined herein), each Purchaser agrees to purchase severally and not jointly and the Company agrees to issue and sell to such Purchaser severally and not jointly that number of whole shares of the Company's common stock, $0.001 par value, (the "Common Stock") set forth opposite such Purchaser's name on Appendix A (the "Shares"), at a purchase price that is equal to One Dollar and Eighty-Five Cents ($1.85) per Share and a warrant to purchase that number of shares of Common Stock set forth opposite such Purchaser's name on Appendix A, at an exercise price of Two Dollars Twenty-Six Cents ($2.26) per share, substantially in the form attached hereto as Appendix F-1 or with respect to North Sound Legacy Institutional Fund LLC and North Sound Legacy International Ltd. in the form attached hereto as Appendix F-2 (each, a "Warrant" and collectively the "Warrants"). The shares of Common Stock issuable upon exercise of the Warrants are referred to herein as the Warrant Shares. The Shares and the Warrants are referred to herein collectively as the "Securities." The Purchasers and the Company agree and acknowledge that the Company may, at any Purchaser's prior written request, include in the Warrant issuable to such Purchaser pursuant to this Agreement a provision, agreed to by such Purchaser and the Company, pursuant to which such Purchaser would be prohibited from exercising such Warrant to the extent that such Purchaser would upon exercise beneficially hold a number of shares of Common Stock in excess of an agreed percentage of the total number of shares of Common Stock then issued and outstanding. Section 2. The Closing. 2.1. The Closing. (a) The purchase and sale of the Securities upon the terms and conditions hereof will take place at a closing (the "Closing") to be held at the offices of Cooley Godward LLP, Five Palo Alto Square, 3000 El Camino Real, Palo Alto, CA 94306-2155, or such other location as the parties may agree, on the second business day after all conditions to closing set forth in Section 2.2 have been satisfied or waived, but in no event later than July 29, 2005 unless otherwise agreed to among the Company and the Purchasers (the "Closing Date"). (b) The Company shall provide wire transfer instructions for the payment of the Purchase Price prior to the Closing. 2.2. Conditions to Closing. (a) The Company's obligation to complete the purchase and sale of the Securities and deliver such stock and warrant certificate(s) to each Purchaser is subject to: (i) receipt by the Company of immediately available funds in the full amount of the purchase price for the Securities being purchased hereunder as set forth opposite such Purchaser's name on Appendix A (the "Purchase Price"), in accordance with the wire transfer instructions delivered by the Company pursuant to Section 2.1(b); (ii) the accuracy in all material respects of the representations and warranties made by such Purchaser in Section 4 below as of the Closing Date and the fulfillment in all material respects of those undertakings of such Purchaser in this Agreement to be fulfilled on or prior to the Closing Date; (iii) the aggregate Purchase Price paid by the Purchasers at the Closing shall be greater than or equal to $15,000,000; (iv) the Company shall have received notification from American Stock Exchange LLC ("Amex") that the Shares and Warrant Shares have been approved for listing with Amex; and (v) the receipt by the Company from all Purchasers other than North Sound Legacy Institutional Fund LLC, North Sound Legacy International Ltd. and Royal Bank of Canada of a copy of the Rights Agreement duly executed by each such Purchaser. 2 (b) Each Purchaser's obligation to complete the purchase and sale of the Securities is subject to: (i) the accuracy in all material respects of the representations and warranties made by the Company in Section 3 below as of the Closing Date and the fulfillment in all material respects of those undertakings of the Company in this Agreement to be fulfilled on or prior to the Closing Date; (ii) delivery by the Company to such Purchaser of an opinion, dated as of the Closing Date, from Bingham McCutchen LLP, counsel to the Company, in the form attached as Appendix B hereto; (iii) the Company's delivery to its transfer agent of irrevocable instructions, subject to fulfillment of the conditions set forth in Section 2.2(a), to issue to such Purchaser or in such nominee name(s) as designated by such Purchaser in writing such number of Shares set forth opposite such Purchaser's name on Appendix A or, if requested by the Purchaser, one or more certificates representing such Shares; (iv) the issuance of or an undertaking by the Company at the Closing to issue, subject to fulfillment of the conditions set forth in Section 2.2(a), to such Purchaser or in such nominee name(s) as designated by such Purchaser in writing a Warrant exercisable for that number of shares of Common Stock set forth opposite such Purchaser's name on Appendix A or, if requested by the Purchaser, one or more Warrants representing the right to purchase such shares; (v) fulfillment by the Company of the closing conditions set forth in Section 7(f), (g), (j), (k) and (l) of that certain engagement letter dated May 16, 2005 between the Company and CIBC World Markets Corp. ("CIBC"), or waiver of such conditions by CIBC; (vi) the aggregate Purchase Price paid by the Purchasers at the Closing shall be greater than or equal to $15,000,000; (vii) the Company shall have received notification from Amex that the Shares and Warrant Shares have been approved for listing with Amex; and (viii) the receipt by all Purchasers other than North Sound Legacy Institutional Fund LLC, North Sound Legacy International Ltd. and Royal Bank of Canada of a copy of the Rights Agreement in the form of Exhibit G hereto (the "Rights Agreement") duly executed by the Company. 3 Section 3. Representations, Warranties and Covenants of the Company. Except as set forth on the corresponding sections of the Company's disclosure schedule attached hereto as Appendix C (the "Disclosure Schedule"), or as specifically contemplated by this Agreement, the Company hereby represents and warrants to, and covenants with, each Purchaser as of the Closing Date (or such other date specified below) as follows: 3.1. No Material Misstatements. The Private Placement Memorandum dated May 16, 2005, as supplemented June 16, 2005, June 21, 2005 and July 21, 2005, relating to the offering of the Shares, including all exhibits and annexes thereto (including, in particular, the Company's Annual Report on Form 10-KSB for the fiscal year ended December 31, 2004 (the "Annual Report"), the Company's Proxy Statement for the Annual Meeting Stockholders held on May 24, 2005, and the Company's Quarterly Report on Form 10-Q for the 3 months ended March 31, 2005 (the "Quarterly Report"), and all exhibits thereto), as the same may be amended or supplemented, (the "Memorandum"), did not, as of its date, contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary in order to make the statements therein not misleading. Except as set forth in the Memorandum, there has been no material adverse change in the business, financial condition or prospects of the Company since March 31, 2005. 3.2. Incorporated Documents. (a) The documents contained in or incorporated by reference in the Memorandum or distributed by the Company to the Purchasers as a supplement to the Memorandum, which were filed with the Securities and Exchange Commission (the "Commission"), at the time they were filed with the Commission, complied in all material respects with the requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules and regulations of the Commission thereunder, and none of such documents contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. (b) Since January 1, 2003, the Company has filed all documents required to be filed by it prior to the date hereof with the Commission pursuant to the reporting requirements of the Exchange Act (the "SEC Documents"). 3.3. Certain Data. The statistical and market-related data included in the Memorandum are based on or derived from sources that the Company believes to be reliable and accurate. 4 3.4. Financial Statements. (a) The financial statements of the Company (including all notes and schedules thereto) included in the Memorandum present fairly in all material respects the financial position of the Company and its consolidated subsidiaries at the dates indicated and the statement of operations, stockholders' equity and cash flows of the Company and its consolidated subsidiaries for the periods specified; and such financial statements and related schedules and notes thereto, have been prepared in conformity with generally accepted accounting principles, consistently applied throughout the periods involved (subject, in the case of any unaudited financial information, to the absence of note disclosure and normal year-end adjustments). The summary financial data included in the Memorandum present fairly the information shown therein as at the respective dates and for the respective periods specified and have been presented on a basis consistent with the consolidated financial statements set forth in the Memorandum and other financial information (subject, in the case of any unaudited financial information, to the absence of note disclosure and normal year-end adjustments). (b) As of their respective dates, the financial statements of the Company included in the SEC Documents complied as to form in all material respects with applicable accounting requirements and published rules and regulations of the Commission with respect thereto. Such financial statements have been prepared in accordance with generally accepted accounting principles, consistently applied, during the periods involved (except as may be otherwise indicated in such financial statements or the notes thereto) and fairly present in all material respects the financial position of the Company as of the dates thereof and the results of its operations and cash flows for the periods then ended (subject, in the case of unaudited statements, to the absence of note disclosure and normal year end audit adjustments). 3.5. Books and Records; Internal Controls. The books, records and accounts of the Company and its subsidiaries accurately and fairly reflect, in all material respects, in reasonable detail, the transactions in, and dispositions of, the assets of, and the results of operations of, the Company and its subsidiaries. The Company and each of its subsidiaries maintains a system of internal accounting controls sufficient to provide reasonable assurances that (i) transactions are executed in accordance with management's general or specific authorizations, (ii) transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles and to maintain asset accountability, (iii) access to assets is permitted only in accordance with management's general or specific authorization and (iv) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences; the chief executive officer and the chief financial officer 5 of the Company have made all certifications required by the Sarbanes-Oxley Act of 2002, as amended (the "Sarbanes-Oxley Act"), and any related rules and regulations promulgated by the Commission, and the statements contained in any such certification are complete and correct; the Company maintains "disclosure controls and procedures" (as defined in Rule 13a-14(c) under the Exchange Act); the Company is otherwise in compliance in all material respects with all applicable effective provisions of the Sarbanes-Oxley Act and is actively taking steps to ensure that it will be in compliance with other applicable provisions of the Sarbanes-Oxley Act upon the effectiveness of such provisions. 3.6. Independent Accountants. To the knowledge of the Company, J.H. Cohn LLP, whose reports are included as a part of the Memorandum, is and, during the periods covered by its reports, was an independent public accounting firm as required by the Securities Act of 1933, as amended (the "Securities Act"), and the rules and regulations of the Commission thereunder. 3.7. Organization; Good Standing. The Company and each of its subsidiaries, is duly organized, validly existing and in good standing under the laws of their respective jurisdictions of incorporation or organization. The Company and each of its subsidiaries is duly qualified to do business and is in good standing as a foreign corporation in each jurisdiction in which the nature of the business conducted by it or location of the assets or properties owned, leased or licensed by it requires such qualification, except for such jurisdictions where the failure to so qualify individually or in the aggregate would not result in a material adverse effect on the assets, properties, condition, financial or otherwise, or in the results of operations, business affairs or business prospects of the Company and its subsidiaries considered as a whole (a "Material Adverse Effect"); and to the Company's knowledge, no proceeding has been instituted in any such jurisdiction revoking, limiting or curtailing, or seeking to revoke, limit or curtail, such power and authority or qualification and, to the Company's knowledge, no such proceeding is planned or threatened. 3.8. Absence of Litigation. Except as set forth in the SEC Documents, there is no action, suit, proceeding, inquiry or investigation before or by any court, public board, government agency, self-regulatory organization or body pending or, to the actual knowledge of the executive officers of the Company or any of its subsidiaries, threatened in writing against the Company or any of the Company's subsidiaries or any of the Company's or the subsidiaries' officers or directors in their capacities as such, that, either individually or in the aggregate, would result in a Material Adverse Effect. 3.9. Brokers or Finders. No broker, investment banker, financial advisor or other individual, corporation, general or limited partnership, limited 6 liability company, firm, joint venture, association, enterprise, joint securities company, trust, unincorporated organization or other entity (each a "Person"), other than CIBC, RBC Capital Markets and Burnham Hill Partners, a division of Pali Capital, Inc. (together, the "Placement Agent"), the fees and expenses of which will be paid by the Company, is entitled to any broker's, finder's, financial advisor's or other similar fee or commission in connection with the transactions contemplated by this Agreement based upon arrangements made by or on behalf of the Company. 3.10. Use of Proceeds. The Company intends to use the net proceeds from the sale of the Securities hereunder as described in the Memorandum. 3.11. Licenses; Leases. The Company and each of its subsidiaries has all requisite corporate power and authority, and all necessary authorizations, approvals, consents, orders, licenses, certificates and permits of and from all governmental or regulatory bodies or any other person or entity (collectively, the "Permits"), to own, lease and license its assets and properties and conduct its business, all of which are valid and in full force and effect, except where the lack of such Permits, individually or in the aggregate, would not result in a Material Adverse Effect. The Company and each of its subsidiaries has fulfilled and performed in all material respects all of its material obligations with respect to such Permits and no event has occurred that allows, or after notice or lapse of time would allow, revocation or termination thereof or results in any other material impairment of the rights of the Company thereunder. Except as may be required under the Securities Act and state and foreign Blue Sky laws, no other Permits are required to enter into, deliver and perform this Agreement and to issue and sell the Securities. 3.12. Intellectual Property. (a) (i) The Company and its subsidiaries own, or hold under license, and will have on and after the Closing Date full, legally enforceable rights to use, free of any Encumbrances (as defined below), all patents, patent rights, patent applications, licenses, inventions, discoveries, improvements, copyrights (whether registered or unregistered), writings and other works of authorship (including software), know-how (including trade secrets and other unpatented and/or unpatentable proprietary or confidential information, systems or procedures), trademarks (whether registered or unregistered), trademark applications, service marks and trade names (collectively, the "Intellectual Property") that are material and necessary to conduct and operate the business of the Company as currently conducted, and to the Company's knowledge as currently proposed to be conducted, as described in the Memorandum (the "Company Business"), (ii) to the Company's knowledge, neither the use or exploitation of any of its Intellectual Property nor the conduct and operations of the Company Business in the manner currently conducted, each as described in the Memorandum, infringes upon, misappropriates, violates or 7 conflicts in any way with the Intellectual Property rights of any other Person, (iii) to the Company's knowledge, neither the use of any of its Intellectual Property nor the conduct and operation of the Company Business as currently proposed to be conducted by the Company, as described in the Memorandum, will infringe upon, misappropriate, violate or conflict in any way with the Intellectual Property rights of any other Person, (iv) to the Company's knowledge, there is no, nor has there been within the last three years, any pending or threatened assertion or claim related to the use or exploitation of its Intellectual Property or the conduct or operation of the Company Business as described in the Memorandum, involving the infringement, misappropriation, or violation of, or conflict with, in any way the Intellectual Property rights of any other Person, (v) the Company is not and has not been, a party to any action, suit, proceeding or, to the knowledge of the Company, investigation, any of which involve a claim of infringement or misappropriation of any Intellectual Property of any Person, (vi) the Company has not been the subject of, and the Company has no actual knowledge of, any claims with respect to the validity, enforceability or ownership of any of its Intellectual Property and (vii) to the Company's knowledge, there have been no unauthorized uses, disclosures, infringements, or misappropriations by any Person of any of its Intellectual Property or any breaches by any Person, including the Company, of any licenses or other agreements involving its Intellectual Property, which in each case has or could reasonably be expected to have a Material Adverse Effect. (b) To the Company's knowledge, no Person currently is in default with regard to any agreement relating to its Intellectual Property, and there exists no condition or event (including the execution, delivery and performance of this Agreement) which, with the giving of notice or the lapse of time or both, would constitute a default by the Company under any such agreement, or would give any Person any right of termination, cancellation or acceleration of any performance under any such agreement or result in the creation or imposition of any Encumbrance, in each case. (c) For purposes of this Section 3.11, "Encumbrance" means (i) any security interest, pledge, mortgage, deed of trust, hypothecation, lien (including environmental and tax liens), charge, encumbrance, adverse claim, preferential arrangement or restriction of any kind, including any restriction on the use, voting, transfer, receipt of income or other exercise of any attributes of ownership, (ii) interest of a vendor or a lessor under any conditional sale agreement, capital lease or title retention agreement (or any financing lease having substantially the same economic effect) and (iii) any purchase option, call or similar right of a third Person. 3.13. Real Property. Neither the Company nor any of its subsidiaries owns any real property. All real property held under lease by the Company and its subsidiaries is held by them under valid, existing and enforceable 8 leases, free and clear of all liens, encumbrances, claims, security interests and defects, except such as are not material and do not materially interfere with the use made or proposed to be made of such property by the Company and its subsidiaries. Neither the Company nor any of its subsidiaries has sustained any loss or interference with its assets, businesses or properties (whether owned or leased) from fire, explosion, earthquake, flood or other calamity, whether or not covered by insurance, or from any labor dispute or any court or legislative or other governmental action, order or decree which in each case has resulted or would result in a Material Adverse Effect. 3.14. Material Contracts. The Company has attached to the Annual Report and the Quarterly Report each document, contract or other agreement that the Company was required to attach to such report as a material contract pursuant to Item 601(b)(10) of Regulation S-K under the Securities Act (a "Material Contract"). Each description of each Material Contract in the Annual Report or the Quarterly Report reflects in all material respects the material terms of such Material Contract. Each Material Contract is in full force and effect and is valid and enforceable by and against the Company or its subsidiaries, as the case may be, in accordance with its terms. Neither the Company nor any of its subsidiaries, if a subsidiary is a party, nor to the Company's knowledge, any other party is in default in the observance or performance of any term or obligation to be performed by it under any Material Contract, and no event has occurred which with notice or lapse of time or both would constitute such a default, in any such case which default or event, individually or in the aggregate, would result in a Material Adverse Effect. No default exists, and no event has occurred which with notice or lapse of time or both would constitute a default, in the due performance and observance of any term, covenant or condition, by the Company or its subsidiaries, if a subsidiary is a party thereto, of any other agreement or instrument to which the Company or any of its subsidiaries is a party or by which Company or its properties or business or a subsidiary or its properties or business is bound which default or event, individually or in the aggregate, would result in a Material Adverse Effect. 3.15. No Violation. Neither the Company nor any of its subsidiaries is in violation of any term or provision of its charter or by-laws or of any franchise, license, permit, judgment, decree, order, statute, rule or regulation, where the consequences of such violation, individually or in the aggregate, would result in a Material Adverse Effect. 3.16. Due Authorization and Delivery. All necessary corporate action has been duly and validly taken by the Company to authorize the execution, delivery and performance of this Agreement and the issuance and sale of the Securities by the Company. This Agreement has been duly and validly authorized, executed and delivered by the Company and constitutes and will constitute legal, 9 valid and binding obligations of the Company enforceable against the Company in accordance with its terms, except as the enforceability thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting the enforcement of creditors' rights generally and by general equitable principles. 3.17. No Default. Neither the execution, delivery and performance of this Agreement by the Company nor the consummation of any of the transactions contemplated hereby (including, without limitation, the issuance and sale by the Company of the Securities) will give rise to a right to terminate or accelerate the due date of any payment due under, or conflict with or result in the breach of any term or provision of, or constitute a default (or an event which with notice or lapse of time or both would constitute a default) under, or require any consent or waiver under, or result in the execution or imposition of any lien, charge or encumbrance upon any properties or assets of the Company or its subsidiaries pursuant to the terms of, any indenture, mortgage, deed of trust or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which either the Company or its subsidiaries or any of their properties or businesses is bound, or any franchise, license, permit, judgment, decree, order, statute, rule or regulation applicable to the Company or any of its subsidiaries or violate any provision of the charter or by-laws of the Company or any of its subsidiaries. 3.18. Capitalization; Liabilities. The Company has authorized capital stock as set forth under the caption "Description of Common Stock" in the Memorandum and outstanding capital stock as set forth under the caption "Summary of Offering Terms" in the Memorandum. The Company has duly authorized the issuance of certificates evidencing the Shares and the issuance of the Warrants. When issued the certificates evidencing the Shares and Warrant Shares will be in due and proper legal form. All of the issued and outstanding shares of Common Stock have been duly and validly issued and are fully paid and nonassessable. There are no statutory preemptive or other similar rights to subscribe for or to purchase or acquire any shares of Common Stock of the Company or any of its subsidiaries or any such rights pursuant to its Certificate of Incorporation or by-laws or any agreement or instrument to or by which the Company or any of its subsidiaries is a party or bound. The Shares and the Warrant Shares, when issued and sold pursuant to this Agreement and the Warrants, will be duly and validly issued, fully paid and nonassessable and none of them will be issued in violation of any preemptive or other similar right. Except as disclosed in the Memorandum, there is no outstanding option, warrant or other right calling for the issuance of, and there is no commitment, plan or arrangement to issue, any share of stock of the Company or any of its subsidiaries or any security convertible into, or exercisable or exchangeable for, such stock. The Common Stock and Shares conform in all material respects to all statements in relation thereto contained in the Memorandum. All outstanding shares of capital stock of each of the Company's subsidiaries have been duly authorized and 10 validly issued, and are fully paid and nonassessable and are owned directly by the Company or by another wholly-owned subsidiary of the Company free and clear of any security interests, liens, encumbrances, equities or claims, other than those described in the Memorandum. Since April 30, 2005, neither the Company nor its subsidiaries has issued any securities (other than upon the exercise of outstanding warrants or options that are disclosed in the Memorandum). Since March 31, 2005, neither the Company nor its subsidiaries has (i) incurred any liability or obligation, direct or contingent, for borrowed money, except such liabilities or obligations incurred in the ordinary course of business; (ii) entered into any transaction not in the ordinary course of business; or (iii) declared or paid any dividend or made any distribution on any shares of its stock or redeemed, purchased or otherwise acquired or agreed to redeem, purchase or otherwise acquire any shares of its capital stock. 3.19. Lock-Up. In addition to any applicable provisions of the Rights Agreement, for a period of ninety (90) days from the effective date of the Registration Statement (as defined in Section 6.1(a)(i) below), the Company will not, without the prior written consent of CIBC and Purchasers holding at least 66% of the Shares, sell, contract to sell or otherwise dispose of or issue any securities of the Company, except pursuant to previously issued warrants or options, any agreements providing for anti-dilution or other stock purchase or share issuance rights in existence on the date hereof, any employee benefit or similar plan of the Company in existence on the date hereof, or any technology license agreement, strategic alliance or joint venture in existence on the date hereof. The Company agrees that the provisions of the Rights Agreement are cumulative to, and are not in any way limited by, the preceding provisions of this Section 3.19. 3.20. Employees. Neither the Company nor any of its subsidiaries is involved in any labor dispute nor, to the knowledge of the Company, is any such dispute threatened, which dispute would result in a Material Adverse Effect. The Company is not aware of any existing or imminent labor disturbance by the employees of any of its principal suppliers or contractors which would result in a Material Adverse Effect. 3.21. Related Party Transactions. Since January 1, 2004, no transaction has occurred between or among the Company and any of its officers or directors, shareholders or any affiliate or affiliates of any such officer or director or shareholder that is not described in the Memorandum. 3.22. Market Stabilization. The Company has not taken, nor will it take, directly or indirectly, any action designed to or which might reasonably be expected to cause or result in, or which has constituted or which might reasonably be expected to constitute, the stabilization or manipulation of the price of the Common 11 Stock or any security of the Company to facilitate the sale or resale of any of the Securities. 3.23. Taxes. The Company and each of its subsidiaries has filed all Federal, state, local and foreign tax returns which are required to be filed through the date hereof, which returns are true and correct in all material respects or has received timely extensions thereof, and has paid all taxes shown on such returns and all assessments received by it to the extent that the same are material and have become due. There are no tax audits or investigations pending of which the Company has notice, which if adversely determined would result in a Material Adverse Effect and to the knowledge of the Company there are not any material proposed additional tax assessments against the Company or any of its subsidiaries. 3.24. AMEX Compliance; Listing. (a) The Company is in compliance with the requirements of Amex for continued listing of the Common Stock thereon and has not received any notification that, and has no knowledge that, Amex is contemplating terminating such listing nor, to the Company's knowledge, is there any basis therefor. The transactions contemplated by this Agreement will not violate the rules and regulations of Amex. (b) The Shares and Warrant Shares have been duly authorized for listing on the American Stock Exchange. 3.25. Insurance. The Company and its subsidiaries are insured by insurers of recognized financial responsibility against such losses and risks and in such amounts as are customary for development stage entities of approximately equal size to the Company and its subsidiaries which are engaged in a business similar to the Company's business; all policies of insurance and fidelity or surety bonds insuring the Company or any of its subsidiaries or the Company's or its subsidiaries' respective businesses, assets, employees, officers and directors are in full force and effect; the Company and each of its subsidiaries are in compliance with the terms of such policies and instruments in all material respects; and neither the Company nor any subsidiary of the Company has any reason to believe that it will not be able to renew its existing insurance coverage as and when such coverage expires or to obtain similar coverage from similar insurers as may be necessary to continue its business at a cost that is not materially greater than the current cost. Since January 1, 2003, neither the Company nor any of its subsidiaries has been denied any insurance coverage which it has sought or for which it has applied. 3.26. Environmental Laws. 12 (a) (i) Each of the Company and each of its subsidiaries is in compliance in all material respects with all rules, laws and regulation relating to the use, treatment, storage and disposal of toxic substances and protection of health or the environment ("Environmental Law") which are applicable to its business; (ii) neither the Company nor its subsidiaries has received any notice from any governmental authority or third party of an asserted claim under Environmental Laws; (iii) each of the Company and each of its subsidiaries has received all permits, licenses or other approvals required of it under applicable Environmental Laws to conduct its business and is in compliance with all terms and conditions of any such permit, license or approval (except where failure to receive such permits, licenses or approvals would not have a Material Adverse Effect); (iv) no facts currently exist that will require the Company or any of its subsidiaries to make future material capital expenditures to comply with Environmental Laws; and (v) no property which is or has been owned, leased or occupied by the Company or its subsidiaries has been designated as a Superfund site pursuant to the Comprehensive Environmental Response, Compensation of Liability Act of 1980, as amended (42 U.S.C. Section 9601, et. seq.) or otherwise designated as a contaminated site under applicable state or local law. Neither the Company nor any of its subsidiaries has been named as a "potentially responsible party" under the CER, CLA 1980. 3.27. Investment Company. The Company is not and, after giving effect to the offering and sale of the Securities and the application of proceeds thereof as described in the Memorandum, will not be an "investment company" within the meaning of the Investment Company Act of 1940, as amended (the "Investment Company Act"). 3.28. Solicitation; Other Issuances of Securities. Neither the Company nor any of its subsidiaries or affiliates, nor any Person acting on its or their behalf, (i) has engaged in any form of general solicitation or general advertising (within the meaning of Regulation D under the Securities Act) in connection with the offer or sale of the Securities, (ii) has, directly or indirectly, made any offers or sales of any security or solicited any offers to buy any security, under any circumstances that would require registration of the Securities under the Securities Act or (iii) has issued any shares of Common Stock or shares of any series of preferred stock or other securities or instruments convertible into, exchangeable for or otherwise entitling the holder thereof to acquire shares of Common Stock which would be integrated with the sale of the Securities to such Purchaser for purposes of the Securities Act or of any applicable stockholder approval provisions, including, without limitation, under the rules and regulations of any exchange or automated quotation system on which any of the securities of the Company are listed or designated, nor will the Company or any of its subsidiaries or affiliates take any action or steps that would require registration of any of the Securities under the Securities Act or cause the offering of the Securities to be integrated with other 13 offerings. Assuming the accuracy of the representations and warranties of Purchasers, the offer and sale of the Securities by the Company to the Purchasers pursuant to this Agreement will be exempt from the registration requirements of the Securities Act. 3.29. No Corrupt Practices. The Company and any other person associated with or acting on behalf of the Company including, without limitation, any director, officer, agent or employee of the Company or its subsidiaries, has not, directly or indirectly, while acting on behalf of the Company or its subsidiaries (i) used any corporate funds for unlawful contributions, gifts, entertainment or other unlawful expenses relating to political activity; (ii) made any unlawful payment to foreign or domestic government officials or employees or to foreign or domestic political parties or campaigns from corporate funds; (iii) violated any provision of the Foreign Corrupt Practices Act of 1977, as amended; or (iv) made any other unlawful payment. 3.30. No Money Laundering. The operations of the Company and its subsidiaries are and have been conducted at all times in compliance with applicable financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended, the money laundering statutes of all jurisdictions, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, the "Money Laundering Laws") and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of it subsidiaries with respect to the Money Laundering Laws is pending, or to the best knowledge of the Company, threatened. 3.31. No OFAC Sanctions. Neither the Company nor any of its subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee or affiliate of the Company or any of its subsidiaries is currently subject to any U.S. sanctions administered by the Office of Foreign Assets Control of the U.S. Treasury Department ("OFAC"); and the Company will not directly or indirectly use the proceeds of the offering, or lend, contribute or otherwise make available such proceeds to any subsidiary, joint venture partner or other person or entity, for the purpose of financing the activities of any person currently subject to any U.S. sanctions administered by OFAC. 3.32. ERISA. The Company has fulfilled its obligations, if any, under the minimum funding standards of Section 302 of the U.S. Employee Retirement Income Security Act of 1974 ("ERISA") and the regulations and published interpretations thereunder with respect to each "plan" as defined in Section 3(3) of ERISA and such regulations and published interpretations in which its 14 employees are eligible to participate and each such plan is in compliance in all material respects with the presently applicable provisions of ERISA and such regulations and published interpretations. No "Reportable Event" (as defined in 12 ERISA) has occurred with respect to any "Pension Plan" (as defined in ERISA) for which the Company could have any liability. Section 4. Representations, Warranties and Covenants of Each Purchaser. Each Purchaser for itself and no other Purchaser hereby represents and warrants to, and covenants with, the Company as of the Closing Date (or such other date specified below) as follows: 4.1. Organization. Such Purchaser is an entity duly organized and validly existing in good standing (to the extent such concepts are applicable) under the laws of its jurisdiction of organization. Such Purchaser has all requisite corporate power and authority and all necessary governmental approvals to carry on its business as now being conducted, except as would not result in a Material Adverse Effect on such Purchaser's ability to consummate the transactions contemplated by this Agreement. 4.2. Authorization, Enforcement, and Validity. Such Purchaser has the requisite power and authority to enter into this Agreement and to consummate the transactions contemplated hereby. Such Purchaser has taken all necessary action to authorize the execution, delivery and performance of this Agreement. Upon the execution and delivery of this Agreement, this Agreement shall constitute a valid and binding obligation of the Purchaser enforceable in accordance with its terms, except as enforceability may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting creditors' and contracting parties' rights generally and except as enforceability may be subject to general principles of equity. 4.3. Consents and Approvals; No Violation. The execution, delivery and performance of this Agreement by such Purchaser and the consummation by such Purchaser of the transactions contemplated hereby will not (i) result in a violation of such Purchaser's organizational documents; (ii) conflict with, or constitute a default or give to others any rights of termination, amendment, acceleration or cancellation of, any material agreement, indenture or instrument to which such Purchaser is a party (except for such conflicts, defaults, terminations, amendments, accelerations, cancellations and violations as would not, individually or in the aggregate, result in a Material Adverse Effect on such Purchaser's ability to consummate the transactions contemplated by this Agreement); or (iii) result in a violation of any law, rule, regulation, order, judgment or decree applicable to such Purchaser or any of its subsidiaries, except for such violations as would not, 15 individually or in the aggregate, result in a Material Adverse Effect on such Purchaser's ability to consummate the transactions contemplated by this Agreement. Such Purchaser is not required to obtain any consent, authorization or order of, or make any filing or registration with, any court or governmental agency or any regulatory or self-regulatory agency (other than a Schedule 13D, Form 3 or other filing required by the SEC) in order for it to execute, deliver or perform any of its obligations under or contemplated by this Agreement, except where the failure to obtain such consents, authorization or orders or to make such filings or registrations would not, individually or in the aggregate, result in a Material Adverse Effect on such Purchaser's ability to consummate the transactions contemplated by this Agreement. 4.4. Investment Experience. Such Purchaser is an accredited investor within the meaning of Rule 501 of Regulation D promulgated under the Securities Act, is knowledgeable, sophisticated and experienced in making, and is qualified to make, decisions with respect to investments in shares representing an investment decision like that involved in the purchase of the Securities. 4.5. Investment Intent And Limitation On Dispositions. Such Purchaser is acquiring Securities for its own account for investment only and has no intention of selling or distributing any of such Securities or the Warrant Shares or any arrangement or understanding with any other Persons regarding the sale or distribution of such Securities or the Warrant Shares except in accordance with the provisions of Section 6. Such Purchaser will not, directly or indirectly, offer, sell, pledge, transfer or otherwise dispose of (or solicit any offers to buy, purchase or otherwise acquire or take a pledge of) any of the Securities or the Warrant Shares except in accordance with the provisions of Section 6 or pursuant to and in accordance with an exemption from the registration requirements of Section 5 of the Securities Act. 4.6. Information And Risk. (a) Such Purchaser has received and reviewed the Memorandum and has requested, received, reviewed and considered all other information such Purchaser deems relevant in making an informed decision to purchase the Securities. Such Purchaser has had an opportunity to discuss the Company's business, management and financial affairs with its management and also had an opportunity to ask questions of officers and employees of the Company that were answered to such Purchaser's satisfaction. (b) Such Purchaser recognizes that an investment in the Securities involves a high degree of risk, including a risk of total loss of such Purchaser's investment. Such Purchaser is able to bear the economic risk of holding the 16 Securities for an indefinite period, and has knowledge and experience in the financial and business matters such that it is capable of evaluating the risks of the investment in the Securities. (c) Such Purchaser has, in connection with such Purchaser's decision to purchase Securities, not relied upon any representations or other information (whether oral or written) other than as set forth in the representations and warranties of the Company contained herein or the Memorandum. (d) Such Purchaser has, with respect to all matters relating to this Agreement and the offer and sale of the Securities, relied solely upon the advice of such Purchaser's own counsel and has not relied upon or consulted any counsel to the Placement Agent or counsel to the Company. (e) Such Purchaser understands and acknowledges that nothing in the Memorandum, this Agreement, any other materials presented to the Purchaser or any communications between the Purchaser and the Placement Agent in connection with the purchase and sale of the Securities constitutes legal, tax or investment advice. Such Purchaser has consulted such legal, tax and investment advisors as it, in its sole discretion, has deemed necessary or appropriate in connection with its purchase of Securities. (f) Such Purchaser acknowledges that the Placement Agent has acted solely as placement agent for the Company in connection with the offering of the Securities by the Company, that the information and data provided to such Purchaser in connection with the transactions contemplated hereby have not been subjected to independent verification by the Placement Agent, and that the Placement Agent makes no representation or warranty with respect to the accuracy or completeness of such information, data or other related disclosure material. Such Purchaser further acknowledges that in making its decision to enter into this Agreement and to purchase Securities that it has relied on its own examination of the Company and the terms of, and consequences, of holding the Securities. Each Purchaser further acknowledges that the provisions of this Section 4.6 are also for the benefit of, and may also be enforced by, the Placement Agent. 4.7. Restricted Securities. Such Purchaser understands that the Securities are and the Warrant Shares upon issuance will be "restricted securities" as such term is defined in Rule 144 of Regulation D promulgated under the Securities Act ("Rule 144") and must be held indefinitely unless they are subsequently registered or qualified under applicable state and federal securities laws or an exemption from such registration or qualification is available. Such Purchaser understands that it may resell the Securities and the Warrant Shares pursuant to Rule 17 144 only after the satisfaction of certain requirements, including the requirement that the Securities be held for at least one year prior to resale. 4.8. No Obligation to Register. Such Purchaser further acknowledges and understands that, except as provided in Section 6, the Company is under no obligation to register the Securities or the Warrant Shares. 4.9. Disclosures to the Company. Such Purchaser understands that the Company is relying on the statements contained herein to establish an exemption from registration under federal and state securities laws. In addition, such Purchaser will promptly notify the Company of any changes in the information set forth in the Registration Statement (as defined in Section 6.1(a)(i) below) regarding such Purchaser. 4.10. Nature of Purchasers. Except as set forth on Appendix A, such Purchaser: (i) is, to its knowledge, not an affiliate (as such term is defined pursuant to Rule 12b-2 promulgated under the Exchange Act) of any other Purchaser, (ii) is not constituted as a partnership, association, joint venture or any other type of joint entity with any other Purchaser, and (iii) to its knowledge, is not acting as part of a group (as such term is defined under Section 13(d) of the Exchange Act) with any other Purchaser. If at any time after the Closing Date such Purchaser becomes an affiliate (as defined herein) of any other Purchaser (except as set forth above), such Purchaser will provide prompt written notice to the Company. 4.11. Ownership. Such Purchaser (including any Person controlling, controlled by, or under common control with such Purchaser, as the term "control" is defined pursuant to the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and its implementing regulations (the "HSR Act")) does not, and upon the consummation of the transactions contemplated by this Agreement will not, hold voting securities of the Company exceeding an aggregate fair market value as of the Closing Date of fifty three million one hundred dollars ($53,100,000), calculated pursuant to the HSR Act. 4.12. Brokers or Finders. No broker, investment banker, financial advisor or other Person is entitled to any broker's, finder's, financial advisor's or other similar fee or commission in connection with the transactions contemplated hereby based upon arrangements made by or on behalf of such Purchaser. 4.13. Acknowledgement. Such Purchaser acknowledges and agrees that the Company does not make and has not made any representations or warranties with respect to the transactions contemplated by this Agreement other than those specifically set forth in Section 3. 18 4.14. No Short Sales. Between the time such Purchaser learned about the Offering and the public announcement of the Offering, such Purchaser has not engaged in any short sales or similar transactions with respect to the Common stock, nor has such Purchaser, directly or indirectly, caused any Person to engage in any short sales or similar transactions with respect to the Common Stock. Section 5. Survival of Representations and Warranties. Notwithstanding any investigation made by any party to this Agreement or by the Placement Agent, all representations and warranties as to each respective Closing made by the Company and the Purchasers herein shall survive for a period of 18 months following the Closing Date. Section 6. Registration of the Shares and Warrant Shares; Compliance with the Securities Act. 6.1. Registration Procedures And Expenses. (a) Except for such times as the Company may be required to suspend the use of a prospectus forming a part of the Registration Statement (as defined below), the Company will: (i) as soon as practicable, but in no event later than forty-five (45) days following the Closing Date, use reasonable best efforts to prepare and file with the Commission a registration statement on Form S-3 (the "Registration Statement") covering the resale of the Registrable Securities (as defined in Section 6.1(e) below) by each Purchaser other than those Registrable Securities held by Purchasers that have not complied with Section 6.3; provided, however, that within 10 days of receiving the information required pursuant to Section 6.3 with respect to Registrable Securities omitted from the Registration Statement, the Company shall amend or supplement the Registration Statement to register for resale any Registrable Securities initially omitted therefrom, provided, further, however, that if the Registration Statement shall have been declared effective by the Commission, the Company shall have no obligation to make a post-effective amendment to the Registration Statement pursuant to the foregoing proviso but shall, to the extent permitted under rules and regulations promulgated by the Commission, supplement the Registration Statement to register for resale such omitted Registrable Securities; (ii) use best efforts to cause the Registration Statement, as amended, to become effective under the Securities Act as soon as practicable but in any event no later than ninety (90) days after the Closing Date; 19 (iii) prepare and file with the Commission such amendments and supplements to the Registration Statement and the prospectus used in connection therewith (A) as may be necessary to keep the Registration Statement continuously effective until the earlier of (i) as to each Purchaser, such time as all of the Registrable Securities may be sold pursuant to Rule 144(k) of the Securities Act, or (ii) such time as all Registrable Securities purchased by the Purchasers have been sold pursuant to the Registration Statement and (B) as may be reasonably requested by a Purchaser in order to incorporate information concerning such Purchaser or such Purchaser's intended method of distribution; (iv) so long as the Registration Statement is effective covering the resale of Registrable Securities owned by the Purchasers, furnish to each Purchaser with respect to the Registrable Securities registered under the Registration Statement (and to each underwriter, if any, of such Registrable Securities) such reasonable number of copies of prospectuses and such other documents as such Purchaser may reasonably request in order to facilitate the public sale or other disposition of all or any of the Registrable Securities by such Purchaser; (v) use commercially reasonable efforts to file documents required of the Company for normal Blue Sky clearance in states specified in writing by the Purchasers; provided, however, that the Company shall not be required to qualify to do business or consent to service of process generally in any jurisdiction in which the Company is not now so qualified or has not so consented; (vi) bear all expenses in connection with the procedures in paragraphs (a) through (c) of this Section 6.1 and the registration of the Registrable Securities pursuant to the Registration Statement, other than fees and expenses, if any, of counsel or other advisers to the Purchasers or brokerage fees and commissions incurred by the Purchasers, provided, however, that the Company shall reimburse the Purchasers for the reasonable documented fees and expenses of one counsel selected by Purchasers holding a majority of the Shares and reasonably acceptable to all Purchasers and approved by the Company, which approval shall not be unreasonably withheld; (vii) use all commercially reasonable efforts to prevent the issuance of any stop order or other order suspending the effectiveness of such Registration Statement and, if such an order is issued, to obtain the withdrawal thereof at the earliest possible time and to notify each Purchaser of the issuance of such order and the resolution thereof; 20 (viii) furnish to each Purchaser, promptly after the date that such Registration Statement becomes effective, but in any event within two business days thereafter, a letter of outside counsel representing the Company addressed to such Purchaser, confirming the date of effectiveness of such Registration Statement and the absence of any stop order, to the knowledge of the Company; (ix) provide to each Purchaser and its representatives, if requested, the opportunity to conduct a reasonable inquiry of the Company's financial and other records during normal business hours and make available its officers, directors and employees for questions regarding information which such Purchaser may reasonably request in order to fulfill any due diligence obligation on its part; and (x) if requested a reasonable time in advance, permit counsel for the Purchasers to review the Registration Statement and all amendments and supplements thereto, and any comments made by the staff of the Commission and the Company's responses thereto, within a reasonable period of time prior to the filing thereof with the Commission (or, in the case of comments made by the staff of the Commission, within a reasonable period of time following the receipt thereof by the Company); provided, that in any event, the Company shall not be required to provide, and shall not provide, any Purchaser with material, non-public information unless such Purchaser agrees to receive such information and enters into a written confidentiality agreement with the Company pursuant to which such Purchaser would be prohibited from using or disclosing such information until such time as such information becomes public other than by breach of such confidentiality agreement by such Purchaser, provided, further, however, that the Company shall use commercially reasonable best efforts to make public such information on or prior to the date the Commission shall have declared the Registration Statement effective. (b) The Company shall be permitted to suspend for one or more periods (provided that the aggregate length of such suspension shall not exceed twenty business days in any 365-day period) the actions required under Sections 6.1(a)(i) through (iii) to the extent that the Board of Directors of the Company concludes in good faith that the disclosure of additional information in the prospectus is required by law and that such suspension is necessary to permit such disclosure. (c) If (i) a Registration Statement covering (A) all of the Shares and the Warrant Shares and (B) any other shares of Common Stock issued or issuable in respect to the Shares and the Warrant Shares because of stock splits, stock dividends, 21 reclassifications, recapitalizations or similar events (together, the "Registrable Shares") required to be covered thereby and required to be filed by the Company pursuant to this Section 6.1 is (A) not filed with the SEC on or before forty-five (45) days after the Closing Date (a "Filing Failure") or (B) if such Registration Statement is not declared effective by the SEC on or before (1) ninety (90) days after the Closing Date (an "Effectiveness Failure") or (ii) on any day after the effective date of the Registration Statement sales of all the Registrable Shares required to be included on such Registration Statement cannot be made (other than as permitted during a suspension pursuant to Section 6.1(b) of this Agreement) pursuant to such Registration Statement (including, without limitation, because of a failure to keep such Registration Statement effective, to disclose such information as is necessary for sales to be made pursuant to such Registration Statement or to register sufficient shares of Shares) (a "Maintenance Failure"), then, the Company shall pay as liquidated damages (the "Liquidated Damages") for such failure and not as a penalty to any Purchaser an amount in cash determined in accordance with the formula set forth below: For each 30-day period that a Filing Failure, Effectiveness Failure or Maintenance Failure remains uncured, the Company shall pay an amount equal to the purchase price paid to the Company for all Shares then held by such Purchaser multiplied by 1% for the first 30-day period or any portion thereof and increasing by an additional 1% with regard to each additional 30-day period until such Filing Failure, Effectiveness Failure or Maintenance Failure is cured. For any partial 30-day period in which a Filing Failure, Effectiveness Failure or Maintenance Failure exists but is cured prior to the end of the 30-day period, the Company shall pay the Purchasers a pro rata portion of the amount which would be due if the failure continued for the entire 30-day period. For example, if the purchase price paid for all Shares then held by a Purchaser is $5,000,000, then, (a) at the end of the 30th day, the Liquidated Damages would be 1% or $50,000, (b) at the end of the 60th day, the Liquidated Damages for the first 30-day period would have been 1% or $50,000 and for the second 30-day period would be 2% or $100,000, and (c) at the end of the 105th day, the Liquidated Damages for the first 30-day period would have been 1% or $50,000, for the second 30-day period 2% or $100,000, for the third 30-day period 3% or $150,000, and for the final 15-day period, 4% applied pro rata to such 15 days, or $100,000. Payments to be made pursuant to this Section 6.2(c) shall be due and payable to the Purchasers at the end of each calendar month during which Liquidated Damages shall have accrued. The parties agree that the Liquidated Damages represent a reasonable estimate on the part of the parties, as of the date of this Agreement, of the amount of damages that may be incurred by the holders of Registrable Shares if a 22 Filing Failure, Effectiveness Failure or Maintenance Failure occurs. The parties agree that Liquidated Damages shall be the exclusive monetary damages under this Agreement with respect to any Filing Failure, Effectiveness Failure or Maintenance Failure. Notwithstanding the foregoing, no Liquidated Damages shall be due or payable to a Purchaser in any event if as of the date of the Filing Failure, Effectiveness Failure or Maintenance Failure such Purchaser could sell all of the Registrable Shares such Purchaser then holds without registration by reason of Rule 144(k) of the Securities Act. (d) With a view to making available to the Purchasers the benefits of Rule 144 (or its successor rule) and any other rule or regulation of the Commission that may at any time permit the Purchaser to sell Registrable Securities to the public without registration, the Company covenants and agrees to: (i) make and keep public information available, as those terms are understood and defined in Rule 144, until the earlier of (A) six months after such date as all of the Purchasers' Registrable Securities may be resold pursuant to Rule 144(k) or any other rule of similar effect or (B) such date as all of the Purchasers' Registrable Securities shall have been resold; (ii) file with the Commission in a timely manner all reports and other documents required of the Company under the Exchange Act; and (iii) furnish to the Purchaser upon request, as long as the Purchaser owns any Registrable Securities, (A) a written statement by the Company that it has complied with the reporting requirements of the Exchange Act, and (B) such information other than publicly-available SEC filings filed via EDGAR as may be reasonably requested in order to avail the Purchaser of any rule or regulation of the Commission that permits the selling of any such Registrable Securities without registration. (e) For purposes of this Agreement, the term "Registrable Securities" shall mean (A) the Shares and Warrant Shares; and (B) any other shares of Common Stock issued or issuable in respect to the Shares and Warrant Shares because of stock splits, stock dividends, reclassifications, recapitalizations or similar events. 6.2. Restrictions on Transferability. (a) Each Purchaser agrees that it will not effect any disposition of the Warrants or Registrable Securities that would constitute a sale within the meaning of the Securities Act or pursuant to any applicable state securities or Blue Sky laws of any state, except (i) as contemplated in the Registration Statement referred to in Section 6.1 above, (ii) pursuant to the requirements of Rule 144 (in which case such Purchaser will provide the Company with reasonable evidence of such Purchaser's compliance therewith) or (iii) pursuant to an exemption from the registration requirements of Section 5 of the Securities Act as supported by a written opinion of legal counsel reasonably satisfactory to the Company and addressed to the Company 23 to the effect that registration is not required in connection with the proposed transfer; whereupon the holder of such securities shall be entitled to transfer such securities; provided, however, that notwithstanding the foregoing provisions of this section 6.2(a), no such restrictions shall apply to a transfer by a Purchaser that is (A) a partnership transferring to its partners or former partners in accordance with partnership interests and without consideration, (B) a corporation transferring to a wholly-owned subsidiary or a parent corporation that owns all of the capital stock of the Purchaser, (C) a limited liability company transferring to its members or former members in accordance with their interest in the limited liability company and without consideration, or (D) an individual transferring to the Purchaser's family member or trust for the benefit of an individual Purchaser. Each certificate evidencing the securities transferred as above provided shall bear the appropriate restrictive legends as may be required by Section 7. (b) Each Purchaser agrees that there may occasionally be times when the Company must suspend the use of the prospectus forming a part of the Registration Statement until such time as an amendment or supplement to the Registration Statement has been filed by the Company and declared effective, or until such time as the Company has filed an appropriate report with the Commission pursuant to the Exchange Act. Each Purchaser hereby covenants that such Purchaser will not sell any Registrable Securities pursuant to said prospectus during the period commencing at the time at which the Company gives the Purchasers written notice of the suspension of the use of said prospectus and ending at the time the Company gives the Purchasers written notice that the Purchasers may thereafter effect sales pursuant to said prospectus. The Company agrees to file such amendment, supplement or report as soon as practicable following such notice of suspension. (c) None of the Registrable Securities or Warrants shall be transferable except upon the conditions specified in this Section 6, which are intended to ensure compliance with the provisions of the Securities Act. Each Purchaser will cause any proposed transferee of the Registrable Securities or Warrants held by such Purchaser to agree to take and hold such securities subject to the provisions and upon the conditions specified in this Section 6 if and to the extent that such securities continue to be restricted securities in the hands of the transferee, and each such transferee, upon making such agreement, shall be deemed a Purchaser for the purposes of Sections 6, 7, 8, 9 and 10 hereof, and shall be entitled to the benefits of a Purchaser thereunder and subject to the terms and conditions applicable to Purchasers thereunder. 6.3. Furnish Information. It shall be a condition to the Company's obligations to take any action under this Agreement with respect to the registration of a Purchaser's Registrable Securities that such Purchaser shall promptly furnish to the Company, upon request, such information regarding itself, such Purchaser's 24 Registrable Securities, and the intended method of disposition of such Registrable Securities as required by the form of Selling Stockholder Questionnaire attached hereto as Appendix D. In connection therewith, each Purchaser shall be required to represent to the Company that all such information which is given is both complete and accurate in all material respects when made. 6.4. Delay of Registration. The Purchasers shall have no right to obtain or seek an injunction restraining or otherwise delaying any such registration as the result of any controversy that might arise with respect to the interpretation or implementation of the terms of this Agreement. 6.5. Termination Of Conditions And Obligations. (a) The conditions precedent imposed by Section 6.2 above regarding the transferability of the Registrable Securities and Warrants shall cease and terminate as to any particular number of the Shares upon the date on which the Purchaser may sell without volume limitations all such securities then held by the Purchaser without registration by reason of Rule 144 or any other rule of similar effect. (b) The expiration or termination of this Agreement for any reason will have no effect on the rights of any of the parties under the provisions of this Section 6. Section 7. Legends. (a) Such Purchaser understands and agrees that each certificate or other document evidencing any of the Shares, Warrant Shares or Warrants shall be endorsed with the legend substantially in the form set forth below, and such Purchaser covenants that such Purchaser will not transfer such securities represented by any such certificate or document without complying with the restrictions on transfer described in the legend endorsed thereon (unless there is in effect a registration statement under the Securities Act covering such proposed transfer, such securities have been sold under Rule 144 promulgated under the Securities Act ("Rule 144") or as otherwise permitted by the provisions of Section 6.2 above) and understands that the Company will refuse to register a transfer of any such securities unless the conditions specified in the following legend are satisfied: "THE SHARES/WARRANTS REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS. EXCEPT AS SPECIFIED IN THIS LEGEND, SUCH SHARES MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED, OR 25 OTHERWISE TRANSFERRED IN THE ABSENCE OF A REGISTRATION STATEMENT IN EFFECT WITH RESPECT THERETO UNDER SUCH ACT UNLESS SOLD PURSUANT TO RULE 144 OF SUCH ACT OR UNLESS SUCH SALE, PLEDGE, HYPOTHECATION OR TRANSFER IS OTHERWISE EXEMPT FROM REGISTRATION AND ANY APPLICABLE STATE SECURITIES LAWS. THE COMPANY MAY REQUEST A WRITTEN OPINION OF COUNSEL, REASONABLY SATISFACTORY TO THE COMPANY, TO THE EFFECT THAT REGISTRATION IS NOT REQUIRED IN CONNECTION WITH SUCH SALE OR OTHER TRANSFER." (b) Such certificates shall not contain the above legend (i) following any sale of such Registrable Securities pursuant to an effective Registration Statement or Rule 144, or (ii) if the securities represented by such certificate are eligible for sale under Rule 144(k) and the Purchaser has requested removal of such legend. Following the effective date of the Registration Statement or at such earlier time as a legend is no longer required for certain Shares, the Company will, no later than three trading days following the delivery by a Purchaser to the Company or the Company's transfer agent of a legended certificate representing such Shares and a properly completed and executed copy of the Certificate Regarding Resale of Common Stock in the form of Appendix E hereto (or a form of certification substantially similar), deliver or cause to be delivered to such Purchaser a certificate representing such Shares that is free from all restrictive and other legends. (c) Such Purchaser covenants that such Purchaser will not transfer the securities represented by any such certificate without complying with any applicable requirements under the Securities Act to deliver the final prospectus included in the effective Registration Statement to any offeree of Registrable Securities. Section 8. Indemnification. (a) Definitions. (i) For purposes of this Section 8, but not Section 8(c), the term "Purchaser" shall include the Purchaser and any affiliate (as such term is defined pursuant to Rule 12b-2 promulgated under the Exchange Act) of such Purchaser; (ii) For purposes of this Section 8, the term "Prospectus" shall mean the prospectus and any amendment or supplement thereto in the form first filed with the Commission pursuant to Rule 424(b) promulgated under the Securities Act or, if no Rule 424(b) filing is required, filed as part 26 of the Registration Statement at the time of effectiveness, as supplemented or amended from time to time; and (iii) For purposes of this Section 8, the term "Registration Statement" shall include any final prospectus, exhibit, supplement or amendment included in or relating to the Registration Statement. (b) The Company agrees to indemnify and hold harmless each of the Purchasers and each Person, if any, who controls any Purchaser within the meaning of the Securities Act, against any losses, claims, damages, liabilities or expenses, joint or several, to which such Purchasers or such controlling Person may become subject, under the Securities Act, the Exchange Act, or any other federal or state statutory law or regulation, or at common law or otherwise (including in settlement of any litigation, if such settlement is effected with the written consent of the Company), insofar as such losses, claims, damages, liabilities or expenses (or actions in respect thereof as contemplated below) arise out of or are based upon any untrue statement or alleged untrue statement of any material fact contained in the Registration Statement or Prospectus, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances in which they were made, not misleading, or arise out of or are based in whole or in part on any inaccuracy in the representations and warranties of the Company contained in this Agreement, or any failure of the Company to perform its obligations hereunder, and will reimburse each Purchaser and each such controlling Person for any legal and other expenses reasonably incurred as such expenses are reasonably incurred by such Purchaser or such controlling Person in connection with investigating, defending, settling, compromising or paying any such loss, claim, damage, liability, expense or action; provided, however, that the Company will not be liable in any such case to the extent that any such loss, claim, damage, liability or expense arises out of or is based upon (i) an untrue statement or alleged untrue statement or omission or alleged omission made in the Registration Statement or Prospectus in reliance upon and in conformity with written information furnished to the Company by or on behalf of the Purchaser expressly for use therein, (ii) the failure of such Purchaser to comply with the covenants and agreements contained in Section 6.2 above respecting the sale of the Securities, (iii) the inaccuracy of any representations made by such Purchaser herein or (iv) any statement or omission in any Prospectus that is corrected in any subsequent Prospectus that was delivered to the Purchaser a reasonable time prior to the pertinent sale or sales by the Purchaser, and provided that the Purchaser has been notified by the Company that such earlier Prospectus should no longer be delivered by the Purchaser. (c) Each Purchaser will severally, and not jointly, indemnify and hold harmless the Company, each of its directors, each of its officers who signed the 27 Registration Statement and each Person, if any, who controls the Company within the meaning of the Securities Act, against any losses, claims, damages, liabilities or expenses to which the Company, each of its directors, each of its officers who signed the Registration Statement or controlling Person may become subject, under the Securities Act, the Exchange Act, or any other federal or state statutory law or regulation, or at common law or otherwise (including in settlement of any litigation, if such settlement is effected with the written consent of such Purchaser) insofar as such losses, claims, damages, liabilities or expenses (or actions in respect thereof as contemplated below) arise out of or are based upon (i) any failure by such Purchaser to comply with the covenants and agreements contained in Section 6.2 above respecting the sale of the Securities, (ii) the inaccuracy of any representation made by such Purchaser herein or (iii) any untrue or alleged untrue statement of any material fact contained in the Registration Statement or the Prospectus, or the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances in which they were made, not misleading, in each case to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made in the Registration Statement or Prospectus in reliance upon and in conformity with written information furnished to the Company by or on behalf of such Purchaser expressly for use therein, and will reimburse the Company, each of its directors, each of its officers who signed the Registration Statement or controlling Person for any legal and other expense reasonably incurred, as such expenses are reasonably incurred by the Company, each of its directors, each of its officers who signed the Registration Statement or controlling Person in connection with investigating, defending, settling, compromising or paying any such loss, claim, damage, liability, expense or action; provided, however, that the aggregate liability of any Purchaser hereunder shall not exceed the Purchase Price paid by such Purchaser to the Company on the Closing Date. No Purchaser shall be liable for the indemnification obligations of any other Purchaser. (d) Promptly after receipt by an indemnified party under this Section 8 of notice of the threat or commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against an indemnifying party under this Section 8, promptly notify the indemnifying party in writing thereof, but the omission so to notify the indemnifying party will not relieve it from any liability which it may have to any indemnified party hereunder or otherwise to the extent it is not prejudiced as a result of such failure. In case any such action is brought against any indemnified party and such indemnified party seeks or intends to seek indemnity from an indemnifying party, the indemnifying party will be entitled to participate in, and, to the extent that it may wish, jointly with all other indemnifying parties similarly notified, to assume the defense thereof with counsel reasonably satisfactory to such indemnified party; provided, however, if the defendants in any such action include both the indemnified party and the indemnifying party and the indemnified 28 party shall have reasonably concluded that there may be a conflict between the positions of the indemnifying party and the indemnified party in conducting the defense of any such action or that there may be legal defenses available to it and/or other indemnified parties which are different from or additional to those available to the indemnifying party, the indemnified party or parties shall have the right to select separate counsel to assume such legal defenses and to otherwise participate in the defense of such action on behalf of such indemnified party or parties. Upon receipt of notice from the indemnifying party to such indemnified party of its election to assume the defense of such action and approval by the indemnified party of counsel, (which approval shall not be unreasonably withheld), the indemnifying party will not be liable to such indemnified party under this Section 8 for any legal or other expenses subsequently incurred by such indemnified party in connection with the defense thereof unless (i) the indemnified party shall have employed such counsel in connection with the assumption of legal defenses in accordance with the proviso to the preceding sentence (it being understood, however, that the indemnifying party shall not be liable for the expenses of more than one separate counsel, reasonably satisfactory to the indemnifying party, representing the indemnified parties who are parties to such action) or (ii) the indemnifying party shall not have employed counsel reasonably satisfactory to the indemnified party to represent the indemnified party within a reasonable time after notice of commencement of action, in each of which cases the reasonable fees and expenses of counsel shall be at the expense of the indemnifying party. No indemnifying party, in the defense of any claim covered by this Section 8, shall, except with the prior written consent of the indemnified party, which consent shall not be unreasonably conditioned, withheld or delayed, consent to entry of any judgment or enter into any settlement which does not include as an unconditional term thereof the giving by the claimant or plaintiff to such indemnified party of a release from all liability in respect to such claim. An indemnified party shall cooperate with the indemnifying party in the defense of any claim brought against such indemnified party. Section 9. Notices. (a) All notices, requests, consents and other communications hereunder shall be in writing, shall be mailed by first-class registered or certified airmail, confirmed facsimile or nationally recognized overnight express courier postage prepaid, and shall be as addressed as follows: if to the Company, to: ADVENTRX Pharmaceuticals, Inc. 6725 Mesa Ridge Road, Suite 100, San Diego, California 92121 Attention: Evan Levine, Chief Executive Officer 29 Telephone No.: (858) 552-0866 x227 Telecopy No.: (858) 552-0876 with a copy to: Bingham McCutchen LLP Three Embarcadero Center San Francisco, CA 94111 Attention: Hank Evans Francis Sarena Telephone No.: (415) 393-2000 Telecopy No.: (415) 393-2286 and if to any Purchaser, at its address as set forth in Appendix A hereto, or at such other address or addresses as may have been previously furnished to the Company in writing in accordance with this Section 9. (b) Such notices or other communications shall be deemed delivered upon receipt, in the case of overnight delivery, personal delivery, facsimile transmission (as evidenced by the confirmation thereof), or mail. Section 10. Miscellaneous. 10.1. Amendments. Any term of this Agreement may be amended and the observance of any term of this Agreement may be waived (either generally or in a particular instance and either retroactively or prospectively) only with the written consent of the Company and each Purchaser. Any amendment or waiver effected in accordance with this Section 10.1 shall be binding upon each holder of any securities purchased under this Agreement at the time outstanding (including securities into which such securities are convertible), each future holder of all such securities, and the Company. 10.2. Headings. The headings of the various sections of this Agreement are for convenience of reference only and shall not be deemed to be part of this Agreement. 10.3. Severability. In the event that any provision in this Agreement is held to be invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions contained herein shall not in any way be affected or impaired thereby. 10.4. Governing Law And Forum. This Agreement shall be governed by and construed in accordance with the laws of the State of New York 30 applicable to agreements made and to be fully performed therein. The parties hereto agree to submit to the exclusive jurisdiction of the federal and state courts of the State of New York with respect to the interpretation of this Agreement or for the purposes of any action arising out of or related to this Agreement. 10.5. Counterparts. This Agreement may be executed in two or more counterparts, each of which shall constitute an original, and all of which together shall constitute one and the same instrument. In the event that any signature is delivered via facsimile transmission, such signature shall create a valid and binding obligation of the party executing (or on whose behalf such signature is executed) the same with the same force and effect as if such facsimile signature page were an original hereof. 10.6. Entire Agreement. This Agreement contains the entire understanding of the parties with respect to the matters covered herein, supersedes all prior agreements and understandings with respect to such matters and executed by and among the Company and any of the Purchasers, and, except as specifically set forth herein, neither the Company nor the Purchasers make any representation, warranty, covenant or undertaking with respect to such matters. 10.7. Independent Nature Of Purchasers' Obligations And Rights. The obligations of each Purchaser under this Agreement are several and not joint with the obligations of any other Purchaser, and no Purchaser shall be responsible in any way for the performance of the obligations of any other Purchaser under this Agreement. Nothing contained herein and no action taken by any Purchaser pursuant thereto, shall be deemed to constitute the Purchasers as a partnership, an association, a joint venture or any other kind of entity, or create a presumption that the Purchasers are in any way acting in concert or as a group, or are deemed affiliates (as such term is defined under the Exchange Act) with respect to such obligations or the transactions contemplated by this Agreement. Each Purchaser shall be entitled to independently protect and enforce its rights, including without limitation the rights arising out of this Agreement, and it shall not be necessary for any other Purchaser to be joined as an additional party in any proceeding for such purpose. 10.8. Expenses. Each party hereto shall pay all costs and expenses incurred by it in connection with the execution and delivery of this Agreement, and all the transactions contemplated thereby, including fees of legal counsel. 31 IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be executed and delivered by their duly authorized representatives as of the day and year first above written. ADVENTRX PHARMACEUTICALS, INC. By: /s/ Carrie Carlander ------------------------------------ Name: Carrie Carlander Title: Chief Financial Officer ICAHN PARTNERS LP By: /s/ Keith Meister ------------------------------------ Name: Keith Meister Title: Authorized Signatory ICAHN PARTNERS MASTER FUND LP By: /s/ Keith Meister ------------------------------------ Name: Keith Meister Title: Authorized Signatory HIGH RIVER LIMITED PARTNERSHIP BY: HOPPER INVESTMENTS, LLC, ITS GENERAL PARTNER BY: BARBERRY CORP., ITS SOLE MEMBER By: /s/ Edward E. Mattner ------------------------------------ Name: Edward E. Mattner Title: Authorized Signatory SIGNATURE PAGE TO SECURITIES PURCHASE AGREEMENT VIKING GLOBAL EQUITIES LP By: /s/ Brian G. Smith ------------------------------------ Name: Brian G. Smith Title: Chief Financial Officer VGE III PORTFOLIO LTD. By: /s/ Brian G. Smith ------------------------------------ Name: Brian G. Smith Title: Chief Financial Officer NORTH SOUND LEGACY INSTITUTIONAL FUND LLC By: /s/ Andrew Wilder ------------------------------------ Name: Andrew Wilder Title: Chief Operating Officer NORTH SOUND LEGACY INTERNATIONAL LTD. By: /s/ Andrew Wilder ------------------------------------ Name: Andrew Wilder Title: Chief Operating Officer ROYAL BANK OF CANADA BY: RBC CAPITAL MARKETS CORPORATION, ITS AGENT By: /s/ John Wahlstedt ------------------------------------ Name: John Wahlstedt Title: Managing Director By: /s/ Steve Lin ------------------------------------ Name: Steve Lin Title: Managing Director SIGNATURE PAGE TO SECURITIES PURCHASE AGREEMENT APPENDIX A SCHEDULE OF PURCHASERS
NAME IN WHICH CERTIFICATE AGGREGATE SHOULD BE MADE AGGREGATE NUMBER OF TO PURCHASER ADDRESS, NUMBER OF WARRANT TOTAL AGGREGATE PURCHASER (IF DIFFERENT): TELEPHONE AND CONTACT PERSON SHARES SHARES PURCHASE PRICE TAX ID NUMBER --------- --------------- ---------------------------- --------- --------- --------------- ------------- Icahn Partners LP* 767 Fifth Avenue, 47th Floor 1,660,540 1,660,540 $3,071,999.00 New York, NY 10153 Attn: Marc Weitzen, Esq. Telephone: (212) 702-4300 Telecopy: (212) 750-5815 Icahn Partners Master 767 Fifth Avenue, 47th Floor 1,798,919 1,798,919 $3,328,000.15 Fund LP* New York, NY 10153 Attn: Marc Weitzen, Esq. Telephone: (212) 702-4300 Telecopy: (212) 750-5815 High River Limited 767 Fifth Avenue, 47th Floor 864,865 864,865 $1,600,000.25 Partnership* New York, NY 10153 Attn: Marc Weitzen, Esq. Telephone.: (212) 702-4300 Telecopy: (212) 750-5815
- ---------- * These three Purchasers are affiliates as such term is defined pursuant to Rule 12b-2 promulgated under the Exchange Act and acting as a group as such term is defined under Section 13(d) of the Exchange Act.
NAME IN WHICH CERTIFICATE AGGREGATE SHOULD BE MADE AGGREGATE NUMBER OF TO PURCHASER ADDRESS, NUMBER OF WARRANT TOTAL AGGREGATE PURCHASER (IF DIFFERENT): TELEPHONE AND CONTACT PERSON SHARES SHARES PURCHASE PRICE TAX ID NUMBER --------- --------------- ---------------------------- --------- --------- --------------- ------------- Viking Global Equities 55 Railroad Avenue 1,832,483 1,832,483 $3,390,093.55 13-4062034 LP** Greenwich, CT 06830 Attn: Alex Denner Telephone: (203) 863-5000 Telecopy: (203) 625-8705 VGE III Portfolio 55 Railroad Avenue 1,951,300 1,951,300 $3,609,905.00 98-0212947 Ltd.** Greenwich, CT 06830 Attn: Alex Denner Telephone: (203) 863-5000 Telecopy: (203) 625-8705 North Sound Legacy c/o North Sound Capital LLC 378,378 378,378 $ 699,999.30 Institutional Fund Prior to Aug. 1, 2005: LLC*** 53 Forest Avenue Old Greenwich, CT 06870 After Aug. 1, 2005: 20 Horseneck Lane Greenwich, CT 06830 Attn: Andrew B. David, Esq. Telephone: (203) 967-5784 Telecopy: (203) 340-5701 North Sound Legacy c/o North Sound Capital LLC 972,973 972,973 $1,800,000.05 International Ltd.*** Prior to Aug. 1, 2005:
- ---------- ** These two Purchasers are affiliates as such term is defined pursuant to Rule 12b-2 promulgated under the Exchange Act and acting as a group as such term is defined under Section 13(d) of the Exchange Act. *** These two Purchasers are affiliates as such term is defined pursuant to Rule 12b-2 promulgated under the Exchange Act and acting as a group as such term is defined under Section 13(d) of the Exchange Act. 2
NAME IN WHICH CERTIFICATE AGGREGATE SHOULD BE MADE AGGREGATE NUMBER OF TO PURCHASER ADDRESS, NUMBER OF WARRANT TOTAL AGGREGATE PURCHASER (IF DIFFERENT): TELEPHONE AND CONTACT PERSON SHARES SHARES PURCHASE PRICE TAX ID NUMBER --------- --------------- ---------------------------- --------- --------- --------------- ------------- 53 Forest Avenue Old Greenwich, CT 06870 After Aug. 1, 2005: 20 Horseneck Lane Greenwich, CT 06830 Attn: Andrew B. David, Esq. Telephone: (203) 967-5784 Telecopy: (203) 340-5701 Royal Bank of Canada 1 Liberty Plaza 1,351,351 1,351,351 $2,499,999.35 165 Broadway New York, NY 10006 Attn: Joe Muskatel Telephone: 212-858-7492 Telecopy: For delivery of stock certificates and warrants: c/o RBC Capital Markets 1 Liberty Plaza 165 Broadway New York, NY 10006 Attn: Mike Frommer
3 APPENDIX B FORM OF COMPANY COUNSEL OPINION CIBC and the Purchasers shall receive on the Closing Date from counsel for the Company, an opinion (containing the customary exceptions and assumptions), addressed to CIBC and the Purchasers and dated such Closing Date, and stating in effect that: (a) The Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of the State of Delaware. (b) The Company has all requisite corporate power and authority to own, lease and operate its properties and to conduct its business as now being conducted and as described in the Memorandum and with respect to the Company to enter into and perform its obligations under the Agreement and the Rights Agreement and to issue and sell the Shares, Warrants and Warrant Shares. (c) The authorized capital stock of the Company consists of 100,000,000 shares of Common Stock, par value $0.001 per share, and 1,000,000 shares of Preferred Stock, $0.01 par value. (d) The Shares, Warrants and Warrant Shares to be issued and sold by the Company pursuant to the Agreement and the Warrants have been duly authorized for issuance and sale to the Purchasers pursuant to the Agreement and, when issued and delivered by the Company pursuant to the Agreement and the Warrants against payment of the consideration set forth herein, will be validly issued, fully paid and nonassessable. The Warrant Shares have been duly and validly reserved for issuance by the Company. The issuance and sale of the Shares, Warrants and Warrant Shares by the Company is not subject to any preemptive rights, rights of first refusal or any restriction upon the voting or transfer of the Common Stock pursuant to the Delaware General Corporation Law (the "DGCL"), the Company's Certificate of Incorporation as amended (including any Certificate of Designation) (the "Certificate of Incorporation"), the Company's bylaws, or any material agreement listed on Exhibit B to this opinion (the "Material Contracts"). The description of the Common Stock set forth in the Memorandum under "Description of Common Stock" fairly presents, in all material respects, the information required by Item 202 of Regulation S-K promulgated by the Securities and Exchange Commission with respect to the Common Stock. The form of certificate used to evidence the Common Stock complies in all material respects with the DGCL and any applicable requirements of the Certificate of Incorporation or bylaws of the Company. (e) All necessary corporate action has been duly and validly taken by the Company to authorize the execution, delivery and performance of the Agreement and the issuance and sale of the Shares, Warrants and Warrant Shares. The Agreement, the Warrants and the Rights Agreement have been duly and validly authorized, executed and delivered by the Company and constitute the legal, valid and binding obligation of the Company enforceable against the Company in accordance with its terms except as such enforceability may be limited by applicable bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and other similar laws affecting the enforcement of creditors' rights generally and by general equitable principles. (f) Neither the execution, delivery and performance of the Agreement or the Rights Agreement by the Company nor the consummation of any of the transactions contemplated thereby (including, without limitation, the issuance and sale by the Company of the Shares, Warrants and Warrant Shares) will give rise to a right to terminate or accelerate the due date of any payment due under, or result in the breach of any term or provision of, or constitute a default (or any event which with notice or lapse of time, or both, would constitute a default) under, or require consent or waiver under, or result in the execution or imposition of any lien, security interest or encumbrance upon any properties or assets of the Company or any subsidiary pursuant to the terms of any Material Contract, or any order, writ, judgment, injunction, decree, determination or award which has been entered against the Company and of which we have knowledge, or the DGCL or any statute, rule or regulation of the State of California, as currently in effect, or violate any provision of the Certificate of Incorporation or bylaws of the Company or any subsidiary, as currently in effect. (g) No consent, approval, authorization, license, registration, filing, qualification or order of any court, governmental agency or regulatory authority of the United States of America or the State of California is required under any statute, rule or regulation of the United States of America or the State of California, as currently in effect, for the due authorization, execution, delivery or performance of the Agreement or the Rights Agreement by the Company or the issuance of the Shares and Warrants contemplated thereby, except such as have been made or obtained and such as may be required under state securities or Blue Sky laws of any state in connection with the purchase of the Shares by, or the issuance of the Warrants to, the several Purchasers and the filing of a Form D with the SEC pursuant to Regulation D under the Act. (h) To our knowledge, there is no any action, suit, proceeding or other investigation, before any court or administrative agency or before or by any public body or board pending or threatened against, or involving the assets, properties or businesses of, the Company which is not disclosed in the Memorandum and which 2 would reasonably be expected to have a material adverse effect on the Company or its subsidiaries. (i) The Shares and Warrant Shares have been approved for listing on the American Stock Exchange. (j) The Company is not, and after giving effect to the offering and sale of the Securities and application of the proceeds thereof as described under the heading "Use of Proceeds" in the Memorandum, will not be, required to register as an "investment company" as such term is defined in the Investment Company Act of 1940, as amended. (k) The offer and sale of the Securities are exempt from the registration requirements of the Securities Act of 1933, as amended, subject to the timely filing of a Form D pursuant to SEC Regulation D. To the extent deemed advisable by such counsel, such counsel may rely as to matters of fact on certificates of responsible officers of the Company and public officials and on the opinions of other counsel reasonably satisfactory to CIBC as to matters which are governed by laws other than the laws of the States of California and New York, the DGCL and the Federal laws of the United States; provided that such counsel shall state that in their opinion the Purchasers and CIBC are justified in relying on such other opinions. Copies of such certificates and other opinions shall be furnished to CIBC and counsel for the Purchasers. 3 APPENDIX C DISCLOSURE SCHEDULE This Disclosure Schedule (this "Schedule") sets forth exceptions to the representations and warranties made by ADVENTRX Pharmaceuticals, Inc., a Delaware corporation (the "Company"), in the Securities Purchase Agreement, dated July 21, 2005, among the Company and the Purchasers listed on Appendix A thereto (the "Agreement"). Capitalized terms not otherwise defined in this Schedule have the meanings set forth in the Agreement. This Schedule is arranged in separate parts corresponding to the numbered sections contained in Section 3 of the Agreement, and the information disclosed in any numbered part, as set forth herein, shall be deemed to relate to and to qualify the particular representation or warranty set forth in the corresponding numbered section in Section 3 of the Agreement. Contracts and other documents are mentioned in this Schedule for identification purposes only, and their inclusion should not be deemed an admission by the Company that any such listed contract or document is material. Any summary or description of any such contract or document contained in this Schedule is necessarily incomplete, and the entire contract or document should be reviewed. Copies of all such contracts and other documents have been provided to the Placement Agent or counsel to the Placement Agent. SCHEDULE 3.5 BOOKS AND RECORDS; INTERNAL CONTROLS Under the supervision of our Chief Executive Officer and our Chief Financial Officer, the Company evaluated the effectiveness of its disclosure controls and procedures as of December 31, 2004 and March 31, 2005. Based upon that evaluation, the Company's Chief Executive Officer and Chief Financial Officer concluded that as of both dates, the Company's disclosure controls and procedures were not effective to ensure that the Company's management is alerted to material information required to be disclosed by the Company in the reports it files with the Commission and that such material information is recorded and reported within the time periods specified in the Commission's rules and forms. In connection with J.H. Cohn LLP's audit of the Company's financial statements for the fiscal year ended December 31, 2004, J.H. Cohn, the Company's independent registered public accounting firm, advised the Company's Audit Committee that it had identified material weaknesses in the Company's accounting function that need to be re-evaluated and strengthened. The material weaknesses identified by J.H. Cohn and the ineffective disclosure controls and procedures identified by the Company are as follows: (1) the Company's accounting system software has limitations that may not allow the Company to ensure prior period financial information is not changed and is limited in its ability to provide the Company with accurate costing information; and (2) the Company lacks a formal process to review and document journal entries. The Company is unaware of any instances in which any users of the Company's accounting system software made any changes to historical financial data. Since March 31, 2005, the Company has enhanced its internal accounting capability by hiring a controller, and by engaging an independent accounting firm with the appropriate level of technical tax accounting expertise. The Company has engaged a consulting firm to migrate its accounting system to a new system with fewer limitations and greater controls. The Company has also engaged service providers to design, document and implement a formal review and documentation process based on current industry best-practices. 2 SCHEDULE 3.8 ABSENCE OF LITIGATION The Company received a letter dated March 28, 2005 from counsel to Sanofi-Aventis ("Sanofi"), a large pharmaceutical company, in which Sanofi asserts that the Company's use of the mark "ADVENTRX" infringes on Sanofi's "AVENTIS" trademark and demands that the Company discontinue use of the "ADVENTRX" name and mark. As of the date hereof, to the Company's knowledge Sanofi has not filed any claim or instituted any action with respect to this matter. On May 11, 2005, the Company transmitted a letter to counsel to Sanofi in response to the March 28 letter stating that the Company does not believe that its use of the word "ADVENTRX" as a trade name infringes the "AVENTIS" trademark held by Sanofi. 3 SCHEDULE 3.12(A) INTELLECTUAL PROPERTY Schedule 3.8 is incorporated herein by reference. On July 3, 2001, Karo Bio USA, Inc. ("Karo") filed a lawsuit in the United States District Court for the District of Delaware, Civil Action No. 01-455 (RRM) (the "Karo Suit") naming the Company, formerly known as Biokeys Pharmaceuticals, Inc., as the defendant claiming that the Company's use of the name "Biokey" and "Biokeys" infringed on Karo's registered trademark BIOKEY. Karo and the Company entered into a Settlement Agreement, effective March 14, 2002, pursuant to which, among other things, the Company agreed to refrain from using the names "Biokey" and "Biokeys" in commerce, the Company and Karo agreed to dismiss the Karo Suit with prejudice and the Company and Karo each provided the other with a release of claims. A stipulation of dismissal of the Karo Suit was entered on March 26, 2002 with the United States District Court for the District of Delaware. 4 SCHEDULE 3.12(B) INTELLECTUAL PROPERTY As reported in the Quarterly Report, the Company received a letter dated April 13, 2005 from the University of Texas M.D. Anderson Cancer Center and the Board of Regents of The University of Texas System (collectively, "MD Anderson") notifying the Company of MD Anderson's intent to terminate the Patent and Technology License Agreement, dated June 14 1996, as amended June 15, 2000 (the "MDA Agreement"), between the Company and MD Anderson. Pursuant to the MDA Agreement, MD Anderson licensed to the Company certain patents required for the development of the Company's pre-clinical drug Eradicaide, which the Company had planned to develop for use as a viral entry inhibitor against HIV. In the April 13 letter, MD Anderson asserted that the Company was in breach of the provisions of the MDA Agreement that require the Company to pay certain expenses of MD Anderson, provide reports to MD Anderson and commercialize the technology licensed under the MDA Agreement. Pursuant to terms of the MDA Agreement, the MDA Agreement automatically terminated 30 days after MD Anderson's notice because the Company did not cure the alleged breaches. The Company does not currently believe that it owes any expense reimbursement to MD Anderson under the MDA Agreement due to the existence of a number of potential counterclaims against MD Anderson. Nevertheless, because the Company believed that the estimated costs and technical risks of developing the technology licensed under the MDA Agreement outweighed the benefit the Company could reasonably realize if it were able to bring any of the licensed technology to market, the Company determined not to cure any of the alleged breaches and allowed the MDA Agreement to automatically terminate by its terms. 5 SCHEDULE 3.18 CAPITALIZATION Since March 31, 2005, the Company has issued 915,349 shares of Common Stock upon the cash exercise of warrants and 67,750 shares of Common Stock upon the cashless exercise of warrants to purchase 125,635 shares of Common Stock. Each of these warrants was outstanding as of March 31, 2005. As of the date hereof, 55,122,921 shares of Common Stock were issued and outstanding and the Company was obligated to issue (i) 9,951,889 shares of Common Stock pursuant to outstanding warrants, and (ii) 2,942,000 shares of Common Stock pursuant to outstanding options to employees, directors and consultants. 6 CONFIDENTIAL APPENDIX D ADVENTRX PHARMACEUTICALS, INC. SELLING STOCKHOLDER QUESTIONNAIRE Pursuant to Section 6.1 of the Securities Purchase Agreement, dated July 21, 2005 (the "Purchase Agreement"), among ADVENTRX Pharmaceuticals, Inc., a Delaware corporation (the "Company"), you and the other Purchasers named therein, the Company is required to use reasonable best efforts to prepare and file with the Securities and Exchange Commission (the "SEC") a registration statement on Form S-3 (the "Registration Statement") covering the resale of the shares of Common Stock, par value $0.001 per share, of the Company ("Common Stock") purchased by you and the other Purchasers, and issuable upon exercise of the warrants purchased by you and the other Purchasers. Pursuant to Section 6.3 of the Purchase Agreement, it is a condition to the Company's obligations to you under Section 6.1 of the Purchase Agreement that you promptly furnish to the Company, upon request, such information regarding you as shall be reasonably necessary to effect the registration of the shares of Common Stock you purchased pursuant to the Purchase Agreement, and that are exercisable upon exercise of the Warrants purchased thereunder. To that end, the Company requests that you complete this Selling Stockholder Questionnaire (this "Questionnaire"). IF "NONE" OR "NOT APPLICABLE" IS THE APPROPRIATE RESPONSE TO ANY PARTICULAR QUESTION IN THIS QUESTIONNAIRE, PLEASE SO INDICATE RATHER THAN LEAVING THE QUESTION BLANK. If the space provided in this Questionnaire is inadequate, please state your answer on an attached sheet. All questions should be answered as of the date you sign this Questionnaire, unless otherwise specified. STOCKHOLDER NAME AND CONTACT INFORMATION 1. Please provide your name and other contact information: STOCKHOLDER NAME: _________________________________________________________ CONTACT NAME: _________________________________________________________ ADDRESS: _________________________________________________________ _________________________________________________________ _________________________________________________________ PHONE: _________________________________________________________ FACSIMILE: _________________________________________________________ EMAIL: _________________________________________________________ RELATIONSHIP WITH THE COMPANY 2. Within the past three years, have you held any position or office or had any other relationship (other than in connection with the Purchase Agreement) with the Company or any of its predecessors or affiliates? If "yes", please describe: ___________________________________________________________________________ CONFIDENTIAL SECURITY OWNERSHIP 3. (a) List below the number of shares of Common Stock you beneficially own (see Exhibit A for further information regarding beneficial ownership, voting power and investment power).
NUMBER OF SHARES RECORD HOLDER SOLE VOTING POWER? SOLE INVESTMENT POWER? - ---------------- ------------- ------------------ ----------------------
(b) List below each derivative security (e.g., stock options, warrants, etc.) you currently own representing the right to receive or acquire shares of Common Stock.
SOLE TYPE OF SECURITY SOLE VOTING INVESTMENT NUMBER OF SHARES ISSUE DATE EXERCISE PRICE POWER? POWER? - ---------------- ---------- -------------- ----------- ----------
PLAN OF DISTRIBUTION 4. Attached as Exhibit B hereto is a draft of the "Plan of Distribution" section of the Registration Statement. Do you propose to offer or sell any shares of Common Stock to be registered on the Registration Statement ("Registered Shares") by means other than those described in Exhibit B? Yes [ ] No [ ] If "yes", please describe the manner in which you propose to offer or sell such Registered Shares: ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ -2- CONFIDENTIAL 5. Do you currently have specific plans to offer any Registered Shares through the selling efforts of brokers or dealers? Yes [ ] No [ ] If yes, briefly describe the terms of any agreement, arrangement or understanding, entered into or proposed to be entered into with any broker or dealer, including any discounts or commissions to be paid to dealers: ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ 6. Are any of the Registered Shares to be offered otherwise than for cash? Yes [ ] No [ ] If yes, briefly describe: ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ 7. Are any finders to be involved in the offering or sale of any of the Registered Shares? Yes [ ] No [ ] If yes, briefly describe: ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ -3- CONFIDENTIAL BROKER-DEALER STATUS OR AFFILIATION 8. (a) Are you a broker(1) or a dealer(2)? Yes [ ] No [ ] (b) If you answered "yes" to question 8(a), are you registered? Yes [ ] No [ ] (c) If you answered "yes" to question 8(b), please list you NASD registration number below? ______________________________________________________________________ 9. (a) Are you an affiliate of a broker or a dealer? Yes [ ] No [ ] (b) If you answered "yes" to question 9(a), did you acquire the Registered Shares in the ordinary course of business? Yes [ ] No [ ] * * * * * * * * * * - ---------- (1) A "broker" is any person engaged in the business of effecting transactions in securities for the account of others. (2) A "dealer" is any person engaged in the business of buying and selling securities for such person's own account through a broker or otherwise. The term "dealer" does not include a person that buys or sells securities for such person's own account, either individually or in a fiduciary capacity, but not as part of a regular business. -4- CONFIDENTIAL CERTIFICATION I understand that the information in this Questionnaire is for use in connection with the filing of the Registration Statement with the SEC, and that the answers to the questions submitted will be relied on by the Company and its officers and directors in preparing and filing the Registration Statement. The information contained in this Questionnaire is true, complete and correct. I WILL NOTIFY THE COMPANY PROMPTLY OF ANY CHANGES IN THE FOREGOING INFORMATION (PARTICULARLY WITH RESPECT TO OWNERSHIP OF THE COMPANY'S SECURITIES) THAT MAY OCCUR PRIOR TO THE ACTUAL DATE OF THE FILING WITH THE SEC. Dated: _____________ ____, 2005 Stockholder: ------------------------- (please print) - ------------------------------------- (signature) Name: ------------------------------- (please print) Title: ------------------------------ (please print) Please return the completed and executed Questionnaire to: BINGHAM MCCUTCHEN LLP THREE EMBARCADERO CENTER SAN FRANCISCO, CA 94111-4067 ATTENTION: FRANCIS W. SARENA, ESQ. FRANCIS.SARENA@BINGHAM.COM FAX NO. (415) 393-2286 -5- CONFIDENTIAL EXHIBIT A BENEFICIAL OWNERSHIP Beneficial, or beneficially, as applied to the ownership of securities, has been defined by the Securities and Exchange Commission to mean the following: A beneficial owner of a security includes any person (as defined below) who, directly or indirectly, through any contract, arrangement, understanding, relationship, or otherwise has or shares: (i) Voting power, which includes the power to vote, or to direct the voting of, such security, or (ii) Investment power, which includes the power to dispose, or to direct the disposition, of such security. Note that more than one person may have a beneficial interest in the same securities; one may have voting power and the other may have investment power. Even if a person, directly or indirectly, creates or uses a trust, proxy, power of attorney, pooling arrangement or any other contract, arrangement or device with the purpose or effect of divesting such person of beneficial ownership of a security or preventing the vesting of such beneficial ownership to avoid the reporting requirements of section 13(d) of the Securities Exchange Act, he will still be deemed to be the beneficial owner of such security. A person is deemed to be the beneficial owner of a security if that person has the right to acquire beneficial ownership of such security at any time within 60 days, including but not limited to any right to acquire: (a) through the exercise of any option, warrant (including the warrants you purchased pursuant to the Purchase Agreement) or right; (b) through the conversion of a security; (c) pursuant to the power to revoke a trust, discretionary account, or similar arrangement; or (d) pursuant to the automatic termination of a trust, discretionary account or similar arrangement. A member of a national securities exchange is not deemed to be a beneficial owner of securities held directly or indirectly by it on behalf of another person solely because such member is the record holder of such securities and, pursuant to the rules of such exchange, may direct the vote of such securities, without instruction, on other than contested matters or matters that may affect substantially the rights or privileges of the holders of the securities to be voted, but is otherwise precluded by the rules of such exchange from voting without instruction. A person who in the ordinary course of business is a pledgee of securities pursuant to a bona fide pledge agreement will not be deemed to be the beneficial owner of such pledged securities merely because there has been a default under such an agreement, except during such time as the event of default shall remain uncured for more than 30 days or at any time before a default is cured if the power acquired by the pledgee pursuant to the default enables him to change or influence control of the issuer. A person may also be regarded as the beneficial owner of securities held in the name of his spouse, his minor children or other relatives of his or her spouse sharing his home, or held in a trust of which he is a beneficiary or trustee, if the relationships are such that he has voting power or investment power with respect to such securities. IF YOU HAVE ANY REASON TO BELIEVE THAT ANY INTEREST YOU HAVE, HOWEVER REMOTE, MIGHT BE DESCRIBED AS A BENEFICIAL INTEREST, PLEASE DESCRIBE SUCH INTEREST. A-1 EXHIBIT B PLAN OF DISTRIBUTION We are registering the shares of common stock covered by this prospectus on behalf of the selling security holders listed in this prospectus. Sales of shares may be made by selling security holders, including their respective donees or other successors-in-interest directly to purchasers or to or through underwriters, broker-dealers or through agents. Sales may be made from time to time on the American Stock Exchange, any other exchange or market upon which our shares may trade in the future, in the over-the-counter market or otherwise, at market prices prevailing at the time of sale, at prices related to market prices, or at negotiated or fixed prices. The shares may be sold by one or more of, or a combination of, the following: - - a block trade in which the broker-dealer so engaged will attempt to sell the shares as agent but may position and resell a portion of the block as principal to facilitate the transaction (including crosses in which the same broker acts as agent for both sides of the transaction); - - purchases by a broker-dealer as principal and resale by such broker-dealer, including resales for its account, pursuant to this prospectus; - - ordinary brokerage transactions and transactions in which the broker-dealer solicits purchases; - - through options, swaps or derivatives; - - in privately negotiated transactions; - - in making short sales or in transactions to cover short sales entered into after the date of this prospectus; - - put or call option transactions relating to the shares; or - - any other method permitted by applicable law. The selling security holders may effect these transactions by selling shares directly to purchasers or to or through broker-dealers, which may act as agents or principals. These broker-dealers may receive compensation in the form of discounts, concessions or commissions from the selling security holders or the purchasers of shares for whom such broker-dealers may act as agents or to whom they sell as principals, or both (which compensation as to a particular broker-dealer might be in excess of customary commissions). Each of the selling security holders has advised us that they have not entered into any agreements, understandings or arrangements with any underwriters or broker-dealers regarding the sale of their securities. Each selling security holder will act independently of us in making decisions regarding the timing, manner and size of each sale of shares of common stock covered by this registration statement. Each of the selling security holders may enter into hedging transactions with broker-dealers or other financial institutions. In connection with those transactions, the broker-dealers or other financial institutions may engage in short sales of the shares or of securities convertible into or exchangeable for the shares in the course of hedging positions they assume with the selling security A-1 holders. Each of the selling security holders may also enter into options or other transactions with broker-dealers or other financial institutions which require the delivery of shares offered by this prospectus to those broker-dealers or other financial institutions. The broker-dealer or other financial institution may then resell the shares pursuant to this prospectus (as amended or supplemented, if required by applicable law, to reflect those transactions). Each of the selling security holders and any broker-dealers that act in connection with the sale of shares may be deemed to be "underwriters" within the meaning of Section 2(11) of the Securities Act of 1933, as amended (the "Securities Act"), and any commissions received by broker-dealers or any profit on the resale of the shares sold by them while acting as principals may be deemed to be underwriting discounts or commissions under the Securities Act. Each of the selling security holders may agree to indemnify any agent, dealer or broker-dealer that participates in transactions involving sales of the shares against liabilities, including liabilities arising under the Securities Act. We have agreed to indemnify each of the selling security holders and each selling security holder has agreed, severally and not jointly, to indemnify us against some liabilities in connection with the offering of the shares, including liabilities arising under the Securities Act. Each selling security holder and any other persons participating in a distribution of the securities covered by this registration statement will be subject to the prospectus delivery requirements of the Securities Act and will be subject to applicable provisions of the Securities Exchange Act of 1934, as amended (the "Exchange Act") and the rules and regulations thereunder, including, without limitation, Regulation M, which may restrict certain activities of, and limit the timing of purchases and sales of securities by, selling security holders and other persons participating in a distribution of securities. Furthermore, under Regulation M, persons engaged in a distribution of securities are prohibited from simultaneously engaging in market making and certain other activities with respect to such securities for a specified period of time prior to the commencement of such distribution, subject to specified exceptions or exemptions. All of the foregoing may affect the marketability of the securities offered hereby. Each of the selling security holders also may resell all or a portion of the shares in open market transactions in reliance upon Rule 144 under the Securities Act rather than under this prospectus, provided they meet the criteria and conform to the requirements of Rule 144. Upon being notified by a selling security holder that a material arrangement has been entered into with a broker-dealer for the sale of shares through a block trade, special offering, exchange distribution or secondary distribution or a purchase by a broker or dealer, we will file a supplement to this prospectus, if required pursuant to Rule 424(b) under the Securities Act, disclosing: - - the name of each such selling security holder and of the participating broker-dealer(s); - - the number of shares involved; - - the initial price at which the shares were sold; - - the commissions paid or discounts or concessions allowed to the broker-dealer(s), where applicable; - - that such broker-dealer(s) did not conduct any investigation to verify the information set out or incorporated by reference in this prospectus; and - - other facts material to the transactions. -2- In addition, if required under applicable law or the rules or regulations of the Commission, we will file a supplement to this prospectus when a selling security holder notifies us that a donee intends to sell more than 500 shares of common stock. We are paying all expenses and fees customarily paid by the issuer in connection with the registration of the shares. Each of the selling security holders will bear all brokerage or underwriting discounts or commissions paid to broker-dealers and any transfer agent fees in connection with the sale of the shares. -3- APPENDIX E CERTIFICATE REGARDING RESALE OF COMMON STOCK _____________________________, a selling securityholder listed in the Prospectus (File No. 333-_________) of ADVENTRX Pharmaceuticals, Inc. (the "Company"), dated ___________, 2005 (the "Prospectus"), covering the resale of up to _____________ shares of Common Stock of the Company (the "Covered Shares") by the selling securityholders named therein, hereby certifies and represents and warrants to and for the benefit of the Company, the Company's legal counsel and _________________, the Company's transfer agent, in connection with the sale of certain of the Covered Shares held by the undersigned (the "Resold Shares") that the undersigned has sold the Resold Shares pursuant to the Prospectus and in a manner described under the caption "Plan of Distribution" in the Prospectus and that such sale complied with all applicable securities laws, including, without limitation, the prospectus delivery requirements of the Securities Act of 1933, as amended, and Regulation M promulgated under the Securities Exchange Act of 1934, as amended. Stock Certificate #: _________________________________________________ Number of Resold Shares: _____________________________________________ Date of Sale: ________________________________________________________ IN WITNESS WHEREOF, the undersigned has signed this Certificate Regarding Resale of Common Stock on ________________________, 200__. Signature: ----------------------------- Name: ---------------------------------- (print name of person signing) Title: --------------------------------- (print title if signing on behalf of an entity) APPENDIX F-1 FORM OF WARRANT APPENDIX F-2 FORM OF WARRANT (North Sound Legacy Institutional Fund LLC and North Sound Legacy International Ltd.) APPENDIX G FORM OF RIGHTS AGREEMENT

                                                                       Exhibit 3

NEITHER THIS SECURITY NOR THE SECURITIES INTO WHICH THIS SECURITY IS EXERCISABLE
HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE
SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM
REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN
EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN
AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS THEREUNDER AND IN
COMPLIANCE WITH APPLICABLE STATE SECURITIES OR BLUE SKY LAWS AS EVIDENCED BY A
LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF
WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY.

                         ADVENTRX PHARMACEUTICALS, INC.

                              COMMON STOCK WARRANT

Warrant No. WP-3                                            Dated: July 27, 2005

     ADVENTRX Pharmaceuticals, Inc., a Delaware corporation (the "Company"),
hereby certifies that, for value received, High River Limited Partnership or its
registered assigns ("Holder"), is entitled, subject to the terms set forth
below, to purchase from the Company up to a total Eight Hundred Sixty Four
Thousand Eight Hundred Sixty-Five (864,865) shares of common stock, $0.001 par
value per share (the "Common Stock"), of the Company (each such share, a
"Warrant Share" and all such shares, the "Warrant Shares") at an exercise price
per share equal to Two Dollars Twenty-Six Cents ($2.26) (as such exercise price
may be adjusted from time to time as provided in Section 9, the "Exercise
Price"), at any time and from time to time from and after January 27, 2006 and
through and including the Expiration Date (as such term is defined in Section
14).

     This Warrant is being issued pursuant to the terms of that certain
Securities Purchase Agreement, dated July 21, 2005, by and among the Company,
the Holder and the other entities listed on Appendix A thereto (the "Purchase
Agreement"). All capitalized terms not otherwise defined herein shall have the
meaning given to them in the Purchase Agreement. This Warrant is subject to the
following terms and conditions:

1. Registration of Warrant. The Company shall register this Warrant, upon
records to be maintained by the Company for that purpose (the "Warrant
Register"), in the name of the record Holder from time to time. The Company may
deem and treat the registered Holder of this Warrant as the absolute owner
hereof for the purpose of any exercise hereof or any distribution to the Holder,
and for all other purposes, and the Company shall not be affected by notice to
the contrary.

2. Registration of Transfers and Exchanges.

     (a) The Company shall register the transfer, subject to compliance with
applicable federal and state securities laws, of any portion of this Warrant in
the Warrant Register, upon surrender of this Warrant, with the Form of
Assignment attached hereto duly completed and signed, to the Warrant Agent (as
defined in Section 13) or to the Company at its address for notice set forth in
Section 12. Upon any such registration or transfer, a new warrant to purchase
Common Stock, in substantially the form of this Warrant (any such new warrant, a
"New Warrant"), evidencing the portion of this Warrant so transferred shall be
issued to the transferee and a New Warrant evidencing the remaining portion of
this Warrant not so transferred, if any, shall be issued to the transferring
Holder. The acceptance of the New Warrant by


                                       -1-

the transferee thereof shall be deemed the acceptance of such transferee of all
of the rights and obligations of a holder of a Warrant.

     (b) This Warrant is exchangeable, upon the surrender hereof by the Holder
to the office of the Company at its address for notice set forth in Section 12
for one or more New Warrants, evidencing in the aggregate the right to purchase
the number of Warrant Shares which may then be purchased hereunder.

3. Duration and Exercise of Warrants.

     (a) This Warrant shall be exercisable by the registered Holder on any
business day before 5:00 P.M. (Pacific Time) at any time and from time to time
on or after January 27, 2006 to and including the Expiration Date. At 5:00 P.M.
(Pacific Time) on the Expiration Date, the portion of this Warrant not exercised
prior thereto shall expire and become void and of no value. Prior to the
Expiration Date, the Company may not call or otherwise redeem this Warrant.

     (b) Subject to Section 10, upon delivery of an executed Form of Election to
Purchase, together with the grid attached hereto as Annex A duly completed and
signed, to the Company at its address for notice set forth in Section 12 and
upon payment of the Exercise Price multiplied by the number of Warrant Shares
that the Holder intends to purchase hereunder, in the manner provided hereunder,
all as specified by the Holder in the Form of Election to Purchase, the Company
shall promptly (but in no event later than 5 business days after the Date of
Exercise (as defined herein)) issue or cause to be issued and cause to be
delivered to or upon the written order of the Holder and in such name or names
as the Holder may designate, a certificate for the Warrant Shares issuable upon
such exercise, which may bear a restrictive legend as set forth in Section 7. To
effect an exercise hereunder, the Holder shall not be required to physically
surrender this Warrant to the Company unless all the Warrant Shares have been
exercised. Exercises hereunder shall have the effect of lowering the number of
Warrant Shares in an amount equal to the applicable exercise, which shall be
evidenced by entries set forth on the attached Annex A. The Holder and the
Company shall maintain records showing the number of Warrant Shares exercised
and the date of such exercises. The Holder and any assignee, by acceptance of
this Warrant, acknowledge and agree that, by reason of the provisions of this
paragraph, following exercise of a portion of this Warrant, the number of shares
issuable upon exercise of this Warrant may be less than the amount stated on the
face hereof.

     (c) A "Date of Exercise" means the date on which the Company shall have
received the Form of Election to Purchase completed and duly signed.

     (d) This Warrant shall be exercisable, either in its entirety or, from time
to time, for a portion of the number of Warrant Shares.

4. Payment of Taxes. The Company will pay all documentary stamp taxes
attributable to the issuance of Warrant Shares upon the exercise of this
Warrant; provided, however, that the Company shall not be required to pay any
tax which may be payable in respect of any transfer involved in the registration
of any certificates for Warrant Shares or Warrants in a name other than that of
the Holder. The Holder shall be responsible for all other tax liability that may
arise as a result of holding or transferring this Warrant or receiving Warrant
Shares upon exercise hereof.

5. Replacement of Warrant. If this Warrant is mutilated, lost, stolen or
destroyed, the Company shall issue or cause to be issued in exchange and
substitution for and upon cancellation hereof, or in lieu of and substitution
for this Warrant, a New Warrant, but only upon receipt of evidence reasonably
satisfactory to the Company of such loss, theft or destruction and indemnity.


                                       -2-

6. Reservation of Warrant Shares. The Company covenants that it will at all
times reserve and keep available at all times out of the aggregate of its
authorized but unissued Common Stock, solely for the purpose of enabling it to
issue Warrant Shares upon exercise of this Warrant as herein provided, the
number of Warrant Shares which are then issuable and deliverable upon the
exercise of this entire Warrant, free from preemptive rights or any other actual
contingent purchase rights of persons other than the Holder (taking into account
the adjustments and restrictions of Section 9). The Company covenants that all
Warrant Shares that shall be so issuable and deliverable shall, upon issuance
and receipt of the payment of the applicable Exercise Price in accordance with
the terms hereof, be duly and validly authorized, issued and fully paid and
nonassessable.

7. Acquisition of Warrant for Personal Account. Holder understands that neither
this Warrant nor any of the Warrant Shares have been registered under the
Securities Act of 1933, as amended (the "Securities Act"). Holder also
understands that this Warrant and the Warrant Shares are being offered and sold
pursuant to an exemption from registration contained in the Securities Act based
in part upon Holder's representations contained herein and in the Purchase
Agreement. Holder represents and warrants as follows:

     (a) Holder is an accredited investor within the meaning of Rule 501 of
Regulation D promulgated under the Securities Act, is knowledgeable,
sophisticated and experienced in making, and is qualified to make, decisions
with respect to investments in securities representing an investment decision
like that involved in the purchase of this Warrant and the Warrant Shares.

     (b) Holder is acquiring this Warrant and, if this Warrant is exercised,
will acquire the Warrant Shares for its own account for investment only. Holder
has no intention of selling or distributing this Warrant or any Warrant Shares
or any arrangement or understanding with any other Persons regarding the sale or
distribution of this Warrant or any of the Warrant Shares except in accordance
with the provisions of Section 6 of the Purchase Agreement. Holder will not,
directly or indirectly, offer, sell, pledge, transfer or otherwise dispose of
(or solicit any offers to buy, purchase or otherwise acquire or take a pledge
of) this Warrant or any of the Warrant Shares except in accordance with the
provisions of Section 6 of the Purchase Agreement with respect to the Warrant
Shares or pursuant to and in accordance with the Securities Act.

     (c) Holder has received and reviewed the Memorandum and has requested,
received, reviewed and considered all other information Holder deems relevant in
making an informed decision to purchase this Warrant and the Warrant Shares.
Holder has had an opportunity to discuss the Company's business, management and
financial affairs with its management and also had an opportunity to ask
questions of officers and employees of the Company that were answered to
Holder's satisfaction.

     (d) Holder recognizes that an investment in this Warrant and the Warrant
Shares involves a high degree of risk, including a risk of total loss of
Holder's investment. Holder is able to bear the economic risk of holding this
Warrant and the Warrant Shares for an indefinite period, and has knowledge and
experience in the financial and business matters such that it is capable of
evaluating the risks of the investment in this Warrant and the Warrant Shares.

     (e) Holder has, in connection with Holder's decision to purchase this
Warrant and, if this Warrant is exercised, the Warrant Shares, not relied upon
any representations or other information (whether oral or written) other than as
set forth in the representations and warranties of the Company contained herein
or the Memorandum. Holder has, with respect to all matters relating to this
Warrant and the offer and sale of the Warrant Shares, relied solely upon the
advice of Holder's own counsel and has not relied upon or consulted any counsel
to the Placement Agent or counsel to the Company.


                                       -3-

     (f) Holder understands and acknowledges that nothing in the Memorandum,
this Warrant, any other materials presented to Holder or any communications
between Holder and the Placement Agent in connection with the purchase and sale
of this Warrant and the Warrant Shares constitutes legal, tax or investment
advice. Holder has consulted such legal, tax and investment advisors as it, in
its sole discretion, has deemed necessary or appropriate in connection with its
purchase of Warrant Shares.

     (g) Holder acknowledges that the Placement Agent has acted solely as
placement agent for the Company in connection with the offering of this Warrant
and the Warrant Shares by the Company, that the information and data provided to
Holder in connection with the transactions contemplated hereby have not been
subjected to independent verification by the Placement Agent, and that the
Placement Agent makes no representation or warranty with respect to the accuracy
or completeness of such information, data or other related disclosure material.
Holder further acknowledges that in making its decision to enter into this
Warrant and to purchase Warrant Shares that it has relied on its own examination
of the Company and the terms of, and consequences, of holding this Warrant and
the Warrant Shares. Each Holder further acknowledges that the provisions of this
Section 7(g) are also for the benefit of, and may also be enforced by, the
Placement Agent.

     (h) Holder understands that this Warrant and the Warrant Shares are
"restricted securities" as such term is defined in Rule 144 of Regulation D
promulgated under the Securities Act ("Rule 144") and must be held indefinitely
unless they are subsequently registered or qualified under applicable state and
federal securities laws or an exemption from such registration or qualification
is available. Holder understands that it may resell the Warrant Shares pursuant
to Rule 144 only after the satisfaction of certain requirements, including the
requirement that the Warrant Shares be held for at least one year prior to
resale.

     (i) Holder acknowledges and agrees that this Warrant and Warrant Shares are
subject to certain restrictions as to resale or transfer under the federal and
state securities laws. Holder agrees and understands that stop transfer
instructions will be given to the transfer agent for the Warrant Shares, and
each certificate delivered on transfer of or in substitution for any such
certificate, and each certificate representing the Warrant Shares shall have
affixed a legend in substantially the following form:

     "THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER
     THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS.
     EXCEPT AS SPECIFIED IN THIS LEGEND, SUCH SHARES MAY NOT BE SOLD, OFFERED
     FOR SALE, PLEDGED OR HYPOTHECATED, OR OTHERWISE TRANSFERRED IN THE ABSENCE
     OF A REGISTRATION STATEMENT IN EFFECT WITH RESPECT THERETO UNDER SUCH ACT
     UNLESS SOLD PURSUANT TO RULE 144 OF SUCH ACT OR UNLESS SUCH SALE, PLEDGE,
     HYPOTHECATION OR TRANSFER IS OTHERWISE EXEMPT FROM REGISTRATION AND ANY
     APPLICABLE STATE SECURITIES LAWS. THE COMPANY MAY REQUEST A WRITTEN OPINION
     OF COUNSEL, REASONABLY SATISFACTORY TO THE COMPANY, TO THE EFFECT THAT
     REGISTRATION IS NOT REQUIRED IN CONNECTION WITH SUCH SALE OR OTHER
     TRANSFER."

     (j) Holder understands that the Company is relying on the statements
contained herein to establish an exemption from registration under federal and
state securities laws. Holder will promptly notify the Company of any changes in
the information set forth in the Registration Statement (as defined in Section
6.1(a)(i) of the Purchase Agreement) regarding Holder.


                                       -4-

     (k) Holder: (i) is, to its knowledge and except as disclosed in the
Purchase Agreement, not an affiliate (as such term is defined pursuant to Rule
12b-2 promulgated under the Securities Exchange Act of 1934, as amended (the
"Exchange Act")) of any other Holder, (ii) is not constituted as a partnership,
association, joint venture or any other type of joint entity with any other
Holder, and (iii) to its knowledge and except as disclosed in the Purchase
Agreement, is not acting as part of a group (as such term is defined under
Section 13(d) of the Exchange Act) with any other Holder. If at any time after
the date of this Warrant (the "Warrant Date") Holder becomes an affiliate (as
defined herein) of any other Holder, Holder will provide prompt written notice
to the Company.

8. Obligation to Register Securities. The Company is not obligated to register
this Warrant or the Warrant Shares for resale under the Securities Act, except
as provided in the Purchase Agreement, and the Holder of this Warrant (or any
assignee hereof) is entitled to the registration rights in respect of the
Warrant Shares as only set forth in the Purchase Agreement.

9. Certain Adjustments. The Exercise Price and number of Warrant Shares issuable
upon exercise of this Warrant are subject to adjustment from time to time as set
forth in this Section 9. Upon each such adjustment of the Exercise Price
pursuant to this Section 9, the Holder shall thereafter prior to the Expiration
Date be entitled to purchase, at the Exercise Price resulting from such
adjustment, the number of Warrant Shares obtained by multiplying (x) the
Exercise Price in effect immediately prior to such adjustment by (y) the number
of Warrant Shares issuable upon exercise of this Warrant immediately prior to
such adjustment and dividing the product thereof by (z) the Exercise Price
resulting from such adjustment.

     (a) If the Company, at any time while this Warrant is outstanding, (i)
shall pay a stock dividend (except scheduled dividends paid on outstanding
preferred stock as of the Warrant Date which contain a stated dividend rate) or
otherwise make a distribution or distributions of capital stock to all the
holders of Common Stock or on any other class of capital stock payable in shares
of Common Stock, (ii) subdivide outstanding shares of Common Stock into a larger
number of shares or (iii) combine outstanding shares of Common Stock into a
smaller number of shares, the Exercise Price shall be multiplied by a fraction
of which the numerator shall be the number of shares of Common Stock (excluding
treasury shares, if any) outstanding before such event and of which the
denominator shall be the number of shares of Common Stock (excluding treasury
shares, if any) outstanding after such event. In such event, the number of
Warrant shares issuable under this Warrant shall be equitably adjusted to
reflect such event (i.e., in the event of 2:1 stock split of the Common Stock,
the number of Warrant shares shall be increased to twice the number available
for purchase prior to the record date for such stock split). Any adjustment made
pursuant to this Section shall become effective immediately after the record
date for the determination of stockholders entitled to receive such dividend or
distribution and shall become effective immediately after the effective date in
the case of a subdivision or combination, and shall apply to successive
subdivisions and combinations.

     (b) In case of any reclassification of the Common Stock or any compulsory
share exchange pursuant to which the Common Stock is converted into other
securities, cash or property, then the Holder shall have the right thereafter to
exercise this Warrant only into the shares of stock and other securities and
property receivable upon or deemed to be held by holders of Common Stock
following such reclassification or share exchange, and the Holder shall be
entitled upon such event to receive such amount of securities or property equal
to the amount of Warrant Shares such Holder would have been entitled to had such
Holder exercised this Warrant immediately prior to such reclassification or
share exchange. The terms of any such reclassification or share exchange shall
include such terms so as to continue to give to the Holder the right to receive
the securities or property set forth in this Section 9(b) upon any exercise
following any such reclassification or share exchange.


                                       -5-

     (c) If while this Warrant, or any portion thereof, remains outstanding and
unexpired, the holders of shares of Common Stock shall receive, or, on or after
the record date fixed for the determination of eligible stockholders, shall have
become entitled to receive, without payment therefor, property (including cash)
of the Company by way of dividend, then and in each case, this Warrant shall
represent the right to acquire, in addition to the number of Warrant Shares then
exercisable, such property (including cash) of the Company such Holder would
have been entitled to had such Holder exercised this Warrant immediately prior
to the record date for such payment.

     (d) For the purposes of this Section 9, the following clauses shall also be
applicable:

          (i) Record Date. In case the Company shall take a record of the
holders of its Common Stock for the purpose of entitling them (A) to receive a
dividend or other distribution payable in Common Stock or in securities
convertible or exchangeable into shares of Common Stock, or (B) to subscribe for
or purchase Common Stock or securities convertible or exchangeable into shares
of Common Stock, then such record date shall be deemed to be the date of the
issue or sale of the shares of Common Stock deemed to have been issued or sold
upon the declaration of such dividend or the making of such other distribution
or the date of the granting of such right of subscription or purchase, as the
case may be.

          (ii) Treasury Shares. The number of shares of Common Stock outstanding
at any given time shall not include shares owned or held by or for the account
of the Company, and the disposition of any such shares shall be considered an
issue or sale of Common Stock.

     (e) All calculations under this Section 9 shall be made to the nearest cent
or the nearest 1/100th of a share, as the case may be.

     (f) If:

          (i) the Company shall declare a dividend (or any other distribution)
on its Common Stock; or

          (ii) the Company shall declare a special nonrecurring cash dividend on
or a redemption of its Common Stock; or

          (iii) the Company shall authorize the granting to all holders of the
Common Stock rights or warrants to subscribe for or purchase any shares of
capital stock of any class or of any rights; or

          (iv) the approval of any stockholders of the Company shall be required
in connection with any reclassification of the Common Stock, any consolidation
or merger to which the Company is a party, any sale or transfer of all or
substantially all of the assets of the Company, or any compulsory share exchange
whereby the Common Stock is converted into other securities, cash or property;
or

          (v) the Company shall authorize the voluntary dissolution, liquidation
or winding up of the affairs of the Company,

then the Company shall cause to be mailed to each Holder at their last addresses
as they shall appear upon the Warrant Register, at least ten calendar days prior
to the applicable record or effective date hereinafter specified, a notice
stating (x) the date on which a record is to be taken for the purpose of such
dividend, distribution, redemption, rights or warrants, or if a record is not to
be taken, the date as of which the holders of Common Stock of record to be
entitled to such dividend, distributions, redemption, rights or warrants are to
be determined or (y) the date on which such reclassification, consolidation,
merger, sale, transfer or share exchange is expected to become effective or
close, and the date as of which it is expected


                                       -6-

that holders of Common Stock of record shall be entitled to exchange their
shares of Common Stock for securities, cash or other property deliverable upon
such reclassification, consolidation, merger, sale, transfer, share exchange,
dissolution, liquidation or winding up, provided, that the failure to mail such
notice or any defect therein or in the mailing thereof shall not affect the
validity of the corporate action required to be specified in such notice.

10. Payment of Exercise Price. Upon exercise of this Warrant, the Holder shall
pay the aggregate Exercise Price payable with respect to the Warrant Shares for
which this Warrant is exercised by cash or by certified or official bank check
payable to the order of the Company, or by wire transfer of immediately
available funds to an account to be designated by the Company.

11. Fractional Shares. The Company shall not be required to issue or cause to be
issued fractional Warrant Shares on the exercise of this Warrant. The number of
full Warrant Shares which shall be issuable upon the exercise of this Warrant
shall be computed on the basis of the aggregate number of Warrant Shares
purchasable on exercise of this Warrant so presented. If any fraction of a
Warrant Share would, except for the provisions of this Section, be issuable on
the exercise of this Warrant, the Company shall pay an amount in cash equal to
the Exercise Price multiplied by such fraction.

12. Notices. Any and all notices or other communications or deliveries hereunder
shall be in writing and shall be deemed given and effective on the earliest of
(i) the date of transmission, if such notice or communication is delivered via
facsimile at the facsimile telephone number specified in this Section prior to
5:00 p.m. (Pacific Time) on a business day, (ii) the business day after the date
of transmission, if such notice or communication is delivered via facsimile at
the facsimile telephone number specified in this Section later than 5:00 p.m.
(Pacific Time) on any date and earlier than 11:59 p.m. (Pacific Time) on such
date, (iii) the business day following the date of mailing, if sent by
nationally recognized overnight courier service, or (iv) upon actual receipt by
the party to whom such notice is required to be given. The addresses for such
communications shall be: (i) if to the Company, to 6725 Mesa Ridge Road, Suite
100, San Diego, California 92121, facsimile (858) 552-0876, attention: Chief
Financial Officer, or (ii) if to the Holder, to the Holder at the address or
facsimile number appearing on the Warrant Register or such other address or
facsimile number as the Holder may provide to the Company in accordance with
this Section.

13. Warrant Agent. The Company shall serve as warrant agent (the "Warrant
Agent") under this Warrant. Upon prior written notice to the Holder, the Company
may appoint a new Warrant Agent. Any corporation into which the Company or any
new warrant agent may be merged or any corporation resulting from any
consolidation to which the Company or any new Warrant Agent shall be a party or
any corporation to which the Company or any new Warrant Agent transfers
substantially all of its corporate trust or shareholders services business shall
be a successor Warrant Agent under this Warrant without any further act. Any
such successor Warrant Agent shall promptly cause notice of its succession as
Warrant Agent to be mailed (by first class mail, postage prepaid) to the Holder
at the Holder's last address as shown on the Warrant Register.


                                       -7-

14. Expiration of Warrant. This Warrant shall expire and no longer be
exercisable as of the date (the "Expiration Date") that is the earlier of (i)
the seven-year anniversary of the Warrant Date; or (ii) immediately prior to the
consummation of either (A) any acquisition of the Company by means of merger,
consolidation or other form of corporate reorganization (other than a
reincorporation transaction or change of domicile) following which the holders
of the outstanding voting securities of the Company immediately prior to such
merger, consolidation or other reorganization do not hold (in their capacity as
such) equity securities representing a majority of the voting power of the
surviving or resulting entity immediately following such merger, consolidation
or other reorganization or (B) a sale of all or substantially all of the assets
of the Company other than to a buyer in which the holders of the outstanding
voting securities of the Company immediately prior to such sale hold (in their
capacity as such) equity securities representing a majority of the voting power
immediately following such sale (any of such events being referred to herein as
an "Acquisition"), in which the consideration to the stockholders of the Company
for their shares of stock consists entirely of cash; provided, however, that if
the amount of cash per share to be paid to the stockholders of the Company in
such Acquisition (the "Per Share Price") is greater than the Exercise Price, the
Company shall be obligated to pay to the Holder, upon consummation of the
Acquisition, an amount for each Warrant Share for which the Holder has not
exercised this Warrant by such date equal to the difference between the Per
Share Price and the Exercise Price.

15. Non-Cash Acquisition.

     (a) In the event of the occurrence of an Acquisition in which the
consideration does not consist entirely of cash, then as part of such
Acquisition, the Company shall make lawful provision such that the Holder shall
thereafter be entitled to receive, upon exercise of this Warrant, prior to the
Expiration Date and upon payment of the Exercise Price, the number of shares of
stock or other securities or property of the corporation or other entity
resulting from the Acquisition (or which purchases the assets of the Company)
that the Holder would have been entitled to receive in the Acquisition if this
Warrant had been exercised immediately before the Acquisition. In all events,
appropriate adjustments (as determined in good faith by the Company's Board of
Directors) shall be made in the application of the provisions of this Warrant
with respect to the rights and interests of the Holder after the Acquisition, to
the extent that the provisions of this Warrant shall be applicable after that
event, as near as reasonably may be, in relation to any shares or other property
deliverable after the Acquisition upon exercise of this Warrant.

     (b) Notwithstanding the provisions of Section 15(a), in the event of an
Acquisition covered by the terms of Section 15(a), then at the Company's option,
this Warrant shall be automatically cancelled (and the Holder will promptly
surrender this Warrant to the Company for cancellation) if, upon consummation of
the Acquisition, the Holder is paid the following amount:

          (i) if the consideration per share to be paid to the stockholders of
the Company in the Acquisition (the "Consideration Per Share") is less than the
Exercise Price, then the Holder shall be paid an amount equal to the value of
the unexercised portion of the Warrant, with such value being based on
application of the Black-Scholes model to the unexercised portion of the Warrant
(as applied by Company's Board of Directors in good faith) using the closing
price of a share of common stock of the Company on the business day prior to the
announcement of the Acquisition;

          (ii) if the Consideration Per Share is greater than the Exercise Price
but equal to or less than $12.26 per share, then the Holder shall be paid an
amount equal to the product of (A) the Consideration Per Share minus the
Exercise Price (the "Delta"), multiplied by (B) the number of Warrant Shares for
which the Holder has not exercised this Warrant by such date (the "Unexercised
Warrant Shares"), and multiplied by (C) 1.40;


                                       -8-

          (iii) if the Consideration Per Share is greater than $12.26 per share
but equal to or less than $22.26 per share, then the Holder shall be paid an
amount equal to the product of (A) the Delta, multiplied by (B) the Unexercised
Warrant Shares, and multiplied by (C) 1.30; and

          (iv) if the Consideration Per Share is $22.26 or greater, then the
Holder shall be paid an amount equal to the product of (A) the Delta, multiplied
by (B) the Unexercised Warrant Shares, and multiplied by (C) 1.20.

     (c) The value of the consideration in an Acquisition covered by this
Section 15(b) shall be determined in good by the Company's Board of Directors.
Upon any adjustment of the Exercise Price pursuant to the terms hereof, the
price ranges in subsections 15(b)(i), (ii), and (iii) hereof shall be similarly
adjusted.

16. Miscellaneous.

     (a) This Warrant shall be binding on and inure to the benefit of the
parties hereto and their respective permitted successors and assigns. This
Warrant may be amended only in writing signed by the Company and the Holder and
their permitted successors and assigns.

     (b) Subject to Section 16(a), above, nothing in this Warrant shall be
construed to give to any person or corporation other than the Company and the
Holder any legal or equitable right, remedy or cause under this Warrant. This
Warrant shall inure to the sole and exclusive benefit of the Company and the
Holder.

     (c) This Agreement shall be governed by and construed under the laws of the
State of New York as applied to agreements among New York residents, made and to
be performed entirely within the State of New York. Each of the Company and the
Holder hereby irrevocably waives personal service of process and consents to
process being served in any such suit, action or proceeding by receiving a copy
thereof sent to the Company at the address in effect for notices to it under
this instrument and agrees that such service shall constitute good and
sufficient service of process and notice thereof. Nothing contained herein shall
be deemed to limit in any way any right to serve process in any manner permitted
by law. Each party irrevocably waives, to the fullest extent permitted by
applicable law, any and all right to trial by jury in any legal proceeding
arising out of or relating to this Agreement or the transactions contemplated
hereby. If either party shall commence an action or proceeding to enforce any
provisions of this Warrant, then the prevailing party in such action or
proceeding shall be reimbursed by the other party for its attorneys fees and
other costs and expenses incurred with the investigation, preparation and
prosecution of such action or proceeding.

     (d) The headings herein are for convenience only, do not constitute a part
of this Warrant and shall not be deemed to limit or affect any of the provisions
hereof.

     (e) In case any one or more of the provisions of this Warrant shall be
invalid or unenforceable in any respect, the validity and enforceability of the
remaining terms and provisions of this Warrant shall not in any way be affected
or impaired thereby and the parties will attempt in good faith to agree upon a
valid and enforceable provision which shall be a commercially reasonable
substitute therefor, and upon so agreeing, shall incorporate such substitute
provision in this Warrant.

     (f) This Warrant is being issued pursuant to the Purchase Agreement and any
provisions hereof may be amended, waived or modified in accordance with the
amendment and modification provision set forth in the Purchase Agreement.


                                       -9-

     (g) Receipt of this Warrant by the Holder shall constitute acceptance of
and agreement to all of the terms and conditions contained herein.

17. No Rights as a Stockholder. Holder shall not, by virtue hereof, be entitled
to any rights of stockholder of the Company, either at law or equity, and the
rights of Holder are limited to those expressed in this Warrant. Nothing
contained in this Warrant shall be construed as conferring upon the Holder the
right to vote or to consent or to receive notice as a stockholder of the Company
on any matters or with respect to any rights whatsoever as a stockholder of the
Company. No dividends or interest shall be payable or accrued in respect of this
Warrant or the interest represented hereby of the Warrant Shares purchasable
hereunder until, and only to the extent that, this Warrant shall have been
exercised in accordance with its terms.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]


                                      -10-

     IN WITNESS WHEREOF, the Company has caused this COMMON STOCK WARRANT to be
duly executed by its authorized officer as of the date first indicated above.

                                        ADVENTRX PHARMACEUTICALS, INC.


                                        By:  /s/ Evan Levine
                                            ------------------------------------
                                            Evan Levine
                                            President and Chief Executive
                                            Officer

                          FORM OF ELECTION TO PURCHASE

(To be executed by the Holder to exercise the right to purchase shares of Common
Stock under the Warrant to which this form applies, issued by ADVENTRX
Pharmaceuticals, Inc. (the "Company"))

To ADVENTRX Pharmaceuticals, Inc.:

     The undersigned hereby irrevocably elects to purchase shares of common
stock, $0.001 value, of the Company (the "Common Stock") and encloses herewith
$________ in cash, certified or official bank check or checks, which sum
represents the aggregate Exercise Price (as defined in the Warrant) for the
number of shares of Common Stock to which this Form of Election to Purchase
relates, together with any applicable taxes payable by the undersigned pursuant
to the Warrant.

     (1) The undersigned hereby elects to purchase ________ shares of the Common
Stock of the Company pursuant to the terms of the attached Warrant, and tenders
herewith payment of the exercise price in full, together with all applicable
transfer taxes, if any.

     (2) The undersigned requests that certificates for the shares of Common
Stock issuable upon this exercise be issued in the name of:

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

  (Please print name, address and social security or tax identification number)

Dated: _______, 200__

Name of Holder:

                                        (Print)
                                                --------------------------------


                                        (By:)
                                              ----------------------------------

                                        (Name:)
                                                --------------------------------

                                        (Title:)
                                                 -------------------------------

                                        (Signature must conform in all respects
                                        to name of holder as specified on the
                                        face of the Warrant)

                               FORM OF ASSIGNMENT

           [To be completed and signed only upon transfer of Warrant]

     FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers
     unto ________________________________ the right represented by the within
     Warrant to purchase ____________ shares of Common Stock of ADVENTRX
     Pharmaceuticals, Inc. to which the within Warrant relates and appoints
     ________________ attorney to transfer said right on the books of ADVENTRX
     Pharmaceuticals, Inc. with full power of substitution in the premises.

Dated:

_______________, _____


                                        ----------------------------------------
                                        (Signature must conform in all respects
                                        to name of holder as specified on the
                                        face of the Warrant)

                                        ----------------------------------------
                                        Address of Transferee

                                        ----------------------------------------

                                        ----------------------------------------

In the presence of:


- -------------------------------------

                                     ANNEX A

Number of Warrant Shares Number of Warrant Shares Number of Warrant Shares Date Available to be Exercised Exercised Remaining to be Exercised - ---- ------------------------- ------------------------ -------------------------

                                                                       Exhibit 4

NEITHER THIS SECURITY NOR THE SECURITIES INTO WHICH THIS SECURITY IS EXERCISABLE
HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE
SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM
REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN
EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN
AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS THEREUNDER AND IN
COMPLIANCE WITH APPLICABLE STATE SECURITIES OR BLUE SKY LAWS AS EVIDENCED BY A
LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF
WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY.

                         ADVENTRX PHARMACEUTICALS, INC.

                              COMMON STOCK WARRANT

Warrant No. WP-1                                            Dated: July 27, 2005

     ADVENTRX Pharmaceuticals, Inc., a Delaware corporation (the "Company"),
hereby certifies that, for value received, Icahn Partners LP or its registered
assigns ("Holder"), is entitled, subject to the terms set forth below, to
purchase from the Company up to a total One Million Six Hundred Sixty Thousand
Five Hundred Forty (1,660,540) shares of common stock, $0.001 par value per
share (the "Common Stock"), of the Company (each such share, a "Warrant Share"
and all such shares, the "Warrant Shares") at an exercise price per share equal
to Two Dollars Twenty-Six Cents ($2.26) (as such exercise price may be adjusted
from time to time as provided in Section 9, the "Exercise Price"), at any time
and from time to time from and after January 27, 2006 and through and including
the Expiration Date (as such term is defined in Section 14).

     This Warrant is being issued pursuant to the terms of that certain
Securities Purchase Agreement, dated July 21, 2005, by and among the Company,
the Holder and the other entities listed on Appendix A thereto (the "Purchase
Agreement"). All capitalized terms not otherwise defined herein shall have the
meaning given to them in the Purchase Agreement. This Warrant is subject to the
following terms and conditions:

1. Registration of Warrant. The Company shall register this Warrant, upon
records to be maintained by the Company for that purpose (the "Warrant
Register"), in the name of the record Holder from time to time. The Company may
deem and treat the registered Holder of this Warrant as the absolute owner
hereof for the purpose of any exercise hereof or any distribution to the Holder,
and for all other purposes, and the Company shall not be affected by notice to
the contrary.

2. Registration of Transfers and Exchanges.

     (a) The Company shall register the transfer, subject to compliance with
applicable federal and state securities laws, of any portion of this Warrant in
the Warrant Register, upon surrender of this Warrant, with the Form of
Assignment attached hereto duly completed and signed, to the Warrant Agent (as
defined in Section 13) or to the Company at its address for notice set forth in
Section 12. Upon any such registration or transfer, a new warrant to purchase
Common Stock, in substantially the form of this Warrant (any such new warrant, a
"New Warrant"), evidencing the portion of this Warrant so transferred shall be
issued to the transferee and a New Warrant evidencing the remaining portion of
this Warrant not so transferred, if any, shall be issued to the transferring
Holder. The acceptance of the New Warrant by


                                       -1-

the transferee thereof shall be deemed the acceptance of such transferee of all
of the rights and obligations of a holder of a Warrant.

     (b) This Warrant is exchangeable, upon the surrender hereof by the Holder
to the office of the Company at its address for notice set forth in Section 12
for one or more New Warrants, evidencing in the aggregate the right to purchase
the number of Warrant Shares which may then be purchased hereunder.

3. Duration and Exercise of Warrants.

     (a) This Warrant shall be exercisable by the registered Holder on any
business day before 5:00 P.M. (Pacific Time) at any time and from time to time
on or after January 27, 2006 to and including the Expiration Date. At 5:00 P.M.
(Pacific Time) on the Expiration Date, the portion of this Warrant not exercised
prior thereto shall expire and become void and of no value. Prior to the
Expiration Date, the Company may not call or otherwise redeem this Warrant.

     (b) Subject to Section 10, upon delivery of an executed Form of Election to
Purchase, together with the grid attached hereto as Annex A duly completed and
signed, to the Company at its address for notice set forth in Section 12 and
upon payment of the Exercise Price multiplied by the number of Warrant Shares
that the Holder intends to purchase hereunder, in the manner provided hereunder,
all as specified by the Holder in the Form of Election to Purchase, the Company
shall promptly (but in no event later than 5 business days after the Date of
Exercise (as defined herein)) issue or cause to be issued and cause to be
delivered to or upon the written order of the Holder and in such name or names
as the Holder may designate, a certificate for the Warrant Shares issuable upon
such exercise, which may bear a restrictive legend as set forth in Section 7. To
effect an exercise hereunder, the Holder shall not be required to physically
surrender this Warrant to the Company unless all the Warrant Shares have been
exercised. Exercises hereunder shall have the effect of lowering the number of
Warrant Shares in an amount equal to the applicable exercise, which shall be
evidenced by entries set forth on the attached Annex A. The Holder and the
Company shall maintain records showing the number of Warrant Shares exercised
and the date of such exercises. The Holder and any assignee, by acceptance of
this Warrant, acknowledge and agree that, by reason of the provisions of this
paragraph, following exercise of a portion of this Warrant, the number of shares
issuable upon exercise of this Warrant may be less than the amount stated on the
face hereof.

     (c) A "Date of Exercise" means the date on which the Company shall have
received the Form of Election to Purchase completed and duly signed.

     (d) This Warrant shall be exercisable, either in its entirety or, from time
to time, for a portion of the number of Warrant Shares.

4. Payment of Taxes. The Company will pay all documentary stamp taxes
attributable to the issuance of Warrant Shares upon the exercise of this
Warrant; provided, however, that the Company shall not be required to pay any
tax which may be payable in respect of any transfer involved in the registration
of any certificates for Warrant Shares or Warrants in a name other than that of
the Holder. The Holder shall be responsible for all other tax liability that may
arise as a result of holding or transferring this Warrant or receiving Warrant
Shares upon exercise hereof.

5. Replacement of Warrant. If this Warrant is mutilated, lost, stolen or
destroyed, the Company shall issue or cause to be issued in exchange and
substitution for and upon cancellation hereof, or in lieu of and substitution
for this Warrant, a New Warrant, but only upon receipt of evidence reasonably
satisfactory to the Company of such loss, theft or destruction and indemnity.


                                       -2-

6. Reservation of Warrant Shares. The Company covenants that it will at all
times reserve and keep available at all times out of the aggregate of its
authorized but unissued Common Stock, solely for the purpose of enabling it to
issue Warrant Shares upon exercise of this Warrant as herein provided, the
number of Warrant Shares which are then issuable and deliverable upon the
exercise of this entire Warrant, free from preemptive rights or any other actual
contingent purchase rights of persons other than the Holder (taking into account
the adjustments and restrictions of Section 9). The Company covenants that all
Warrant Shares that shall be so issuable and deliverable shall, upon issuance
and receipt of the payment of the applicable Exercise Price in accordance with
the terms hereof, be duly and validly authorized, issued and fully paid and
nonassessable.

7. Acquisition of Warrant for Personal Account. Holder understands that neither
this Warrant nor any of the Warrant Shares have been registered under the
Securities Act of 1933, as amended (the "Securities Act"). Holder also
understands that this Warrant and the Warrant Shares are being offered and sold
pursuant to an exemption from registration contained in the Securities Act based
in part upon Holder's representations contained herein and in the Purchase
Agreement. Holder represents and warrants as follows:

     (a) Holder is an accredited investor within the meaning of Rule 501 of
Regulation D promulgated under the Securities Act, is knowledgeable,
sophisticated and experienced in making, and is qualified to make, decisions
with respect to investments in securities representing an investment decision
like that involved in the purchase of this Warrant and the Warrant Shares.

     (b) Holder is acquiring this Warrant and, if this Warrant is exercised,
will acquire the Warrant Shares for its own account for investment only. Holder
has no intention of selling or distributing this Warrant or any Warrant Shares
or any arrangement or understanding with any other Persons regarding the sale or
distribution of this Warrant or any of the Warrant Shares except in accordance
with the provisions of Section 6 of the Purchase Agreement. Holder will not,
directly or indirectly, offer, sell, pledge, transfer or otherwise dispose of
(or solicit any offers to buy, purchase or otherwise acquire or take a pledge
of) this Warrant or any of the Warrant Shares except in accordance with the
provisions of Section 6 of the Purchase Agreement with respect to the Warrant
Shares or pursuant to and in accordance with the Securities Act.

     (c) Holder has received and reviewed the Memorandum and has requested,
received, reviewed and considered all other information Holder deems relevant in
making an informed decision to purchase this Warrant and the Warrant Shares.
Holder has had an opportunity to discuss the Company's business, management and
financial affairs with its management and also had an opportunity to ask
questions of officers and employees of the Company that were answered to
Holder's satisfaction.

     (d) Holder recognizes that an investment in this Warrant and the Warrant
Shares involves a high degree of risk, including a risk of total loss of
Holder's investment. Holder is able to bear the economic risk of holding this
Warrant and the Warrant Shares for an indefinite period, and has knowledge and
experience in the financial and business matters such that it is capable of
evaluating the risks of the investment in this Warrant and the Warrant Shares.

     (e) Holder has, in connection with Holder's decision to purchase this
Warrant and, if this Warrant is exercised, the Warrant Shares, not relied upon
any representations or other information (whether oral or written) other than as
set forth in the representations and warranties of the Company contained herein
or the Memorandum. Holder has, with respect to all matters relating to this
Warrant and the offer and sale of the Warrant Shares, relied solely upon the
advice of Holder's own counsel and has not relied upon or consulted any counsel
to the Placement Agent or counsel to the Company.


                                       -3-

     (f) Holder understands and acknowledges that nothing in the Memorandum,
this Warrant, any other materials presented to Holder or any communications
between Holder and the Placement Agent in connection with the purchase and sale
of this Warrant and the Warrant Shares constitutes legal, tax or investment
advice. Holder has consulted such legal, tax and investment advisors as it, in
its sole discretion, has deemed necessary or appropriate in connection with its
purchase of Warrant Shares.

     (g) Holder acknowledges that the Placement Agent has acted solely as
placement agent for the Company in connection with the offering of this Warrant
and the Warrant Shares by the Company, that the information and data provided to
Holder in connection with the transactions contemplated hereby have not been
subjected to independent verification by the Placement Agent, and that the
Placement Agent makes no representation or warranty with respect to the accuracy
or completeness of such information, data or other related disclosure material.
Holder further acknowledges that in making its decision to enter into this
Warrant and to purchase Warrant Shares that it has relied on its own examination
of the Company and the terms of, and consequences, of holding this Warrant and
the Warrant Shares. Each Holder further acknowledges that the provisions of this
Section 7(g) are also for the benefit of, and may also be enforced by, the
Placement Agent.

     (h) Holder understands that this Warrant and the Warrant Shares are
"restricted securities" as such term is defined in Rule 144 of Regulation D
promulgated under the Securities Act ("Rule 144") and must be held indefinitely
unless they are subsequently registered or qualified under applicable state and
federal securities laws or an exemption from such registration or qualification
is available. Holder understands that it may resell the Warrant Shares pursuant
to Rule 144 only after the satisfaction of certain requirements, including the
requirement that the Warrant Shares be held for at least one year prior to
resale.

     (i) Holder acknowledges and agrees that this Warrant and Warrant Shares are
subject to certain restrictions as to resale or transfer under the federal and
state securities laws. Holder agrees and understands that stop transfer
instructions will be given to the transfer agent for the Warrant Shares, and
each certificate delivered on transfer of or in substitution for any such
certificate, and each certificate representing the Warrant Shares shall have
affixed a legend in substantially the following form:

     "THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER
     THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS.
     EXCEPT AS SPECIFIED IN THIS LEGEND, SUCH SHARES MAY NOT BE SOLD, OFFERED
     FOR SALE, PLEDGED OR HYPOTHECATED, OR OTHERWISE TRANSFERRED IN THE ABSENCE
     OF A REGISTRATION STATEMENT IN EFFECT WITH RESPECT THERETO UNDER SUCH ACT
     UNLESS SOLD PURSUANT TO RULE 144 OF SUCH ACT OR UNLESS SUCH SALE, PLEDGE,
     HYPOTHECATION OR TRANSFER IS OTHERWISE EXEMPT FROM REGISTRATION AND ANY
     APPLICABLE STATE SECURITIES LAWS. THE COMPANY MAY REQUEST A WRITTEN OPINION
     OF COUNSEL, REASONABLY SATISFACTORY TO THE COMPANY, TO THE EFFECT THAT
     REGISTRATION IS NOT REQUIRED IN CONNECTION WITH SUCH SALE OR OTHER
     TRANSFER."

     (j) Holder understands that the Company is relying on the statements
contained herein to establish an exemption from registration under federal and
state securities laws. Holder will promptly notify the Company of any changes in
the information set forth in the Registration Statement (as defined in Section
6.1(a)(i) of the Purchase Agreement) regarding Holder.


                                       -4-

     (k) Holder: (i) is, to its knowledge and except as disclosed in the
Purchase Agreement, not an affiliate (as such term is defined pursuant to Rule
12b-2 promulgated under the Securities Exchange Act of 1934, as amended (the
"Exchange Act")) of any other Holder, (ii) is not constituted as a partnership,
association, joint venture or any other type of joint entity with any other
Holder, and (iii) to its knowledge and except as disclosed in the Purchase
Agreement, is not acting as part of a group (as such term is defined under
Section 13(d) of the Exchange Act) with any other Holder. If at any time after
the date of this Warrant (the "Warrant Date") Holder becomes an affiliate (as
defined herein) of any other Holder, Holder will provide prompt written notice
to the Company.

8. Obligation to Register Securities. The Company is not obligated to register
this Warrant or the Warrant Shares for resale under the Securities Act, except
as provided in the Purchase Agreement, and the Holder of this Warrant (or any
assignee hereof) is entitled to the registration rights in respect of the
Warrant Shares as only set forth in the Purchase Agreement.

9. Certain Adjustments. The Exercise Price and number of Warrant Shares issuable
upon exercise of this Warrant are subject to adjustment from time to time as set
forth in this Section 9. Upon each such adjustment of the Exercise Price
pursuant to this Section 9, the Holder shall thereafter prior to the Expiration
Date be entitled to purchase, at the Exercise Price resulting from such
adjustment, the number of Warrant Shares obtained by multiplying (x) the
Exercise Price in effect immediately prior to such adjustment by (y) the number
of Warrant Shares issuable upon exercise of this Warrant immediately prior to
such adjustment and dividing the product thereof by (z) the Exercise Price
resulting from such adjustment.

     (a) If the Company, at any time while this Warrant is outstanding, (i)
shall pay a stock dividend (except scheduled dividends paid on outstanding
preferred stock as of the Warrant Date which contain a stated dividend rate) or
otherwise make a distribution or distributions of capital stock to all the
holders of Common Stock or on any other class of capital stock payable in shares
of Common Stock, (ii) subdivide outstanding shares of Common Stock into a larger
number of shares or (iii) combine outstanding shares of Common Stock into a
smaller number of shares, the Exercise Price shall be multiplied by a fraction
of which the numerator shall be the number of shares of Common Stock (excluding
treasury shares, if any) outstanding before such event and of which the
denominator shall be the number of shares of Common Stock (excluding treasury
shares, if any) outstanding after such event. In such event, the number of
Warrant shares issuable under this Warrant shall be equitably adjusted to
reflect such event (i.e., in the event of 2:1 stock split of the Common Stock,
the number of Warrant shares shall be increased to twice the number available
for purchase prior to the record date for such stock split). Any adjustment made
pursuant to this Section shall become effective immediately after the record
date for the determination of stockholders entitled to receive such dividend or
distribution and shall become effective immediately after the effective date in
the case of a subdivision or combination, and shall apply to successive
subdivisions and combinations.

     (b) In case of any reclassification of the Common Stock or any compulsory
share exchange pursuant to which the Common Stock is converted into other
securities, cash or property, then the Holder shall have the right thereafter to
exercise this Warrant only into the shares of stock and other securities and
property receivable upon or deemed to be held by holders of Common Stock
following such reclassification or share exchange, and the Holder shall be
entitled upon such event to receive such amount of securities or property equal
to the amount of Warrant Shares such Holder would have been entitled to had such
Holder exercised this Warrant immediately prior to such reclassification or
share exchange. The terms of any such reclassification or share exchange shall
include such terms so as to continue to give to the Holder the right to receive
the securities or property set forth in this Section 9(b) upon any exercise
following any such reclassification or share exchange.


                                       -5-

     (c) If while this Warrant, or any portion thereof, remains outstanding and
unexpired, the holders of shares of Common Stock shall receive, or, on or after
the record date fixed for the determination of eligible stockholders, shall have
become entitled to receive, without payment therefor, property (including cash)
of the Company by way of dividend, then and in each case, this Warrant shall
represent the right to acquire, in addition to the number of Warrant Shares then
exercisable, such property (including cash) of the Company such Holder would
have been entitled to had such Holder exercised this Warrant immediately prior
to the record date for such payment.

     (d) For the purposes of this Section 9, the following clauses shall also be
applicable:

          (i) Record Date. In case the Company shall take a record of the
holders of its Common Stock for the purpose of entitling them (A) to receive a
dividend or other distribution payable in Common Stock or in securities
convertible or exchangeable into shares of Common Stock, or (B) to subscribe for
or purchase Common Stock or securities convertible or exchangeable into shares
of Common Stock, then such record date shall be deemed to be the date of the
issue or sale of the shares of Common Stock deemed to have been issued or sold
upon the declaration of such dividend or the making of such other distribution
or the date of the granting of such right of subscription or purchase, as the
case may be.

          (ii) Treasury Shares. The number of shares of Common Stock outstanding
at any given time shall not include shares owned or held by or for the account
of the Company, and the disposition of any such shares shall be considered an
issue or sale of Common Stock.

     (e) All calculations under this Section 9 shall be made to the nearest cent
or the nearest 1/100th of a share, as the case may be.

     (f) If:

          (i) the Company shall declare a dividend (or any other distribution)
on its Common Stock; or

          (ii) the Company shall declare a special nonrecurring cash dividend on
or a redemption of its Common Stock; or

          (iii) the Company shall authorize the granting to all holders of the
Common Stock rights or warrants to subscribe for or purchase any shares of
capital stock of any class or of any rights; or

          (iv) the approval of any stockholders of the Company shall be required
in connection with any reclassification of the Common Stock, any consolidation
or merger to which the Company is a party, any sale or transfer of all or
substantially all of the assets of the Company, or any compulsory share exchange
whereby the Common Stock is converted into other securities, cash or property;
or

          (v) the Company shall authorize the voluntary dissolution, liquidation
or winding up of the affairs of the Company,

then the Company shall cause to be mailed to each Holder at their last addresses
as they shall appear upon the Warrant Register, at least ten calendar days prior
to the applicable record or effective date hereinafter specified, a notice
stating (x) the date on which a record is to be taken for the purpose of such
dividend, distribution, redemption, rights or warrants, or if a record is not to
be taken, the date as of which the holders of Common Stock of record to be
entitled to such dividend, distributions, redemption, rights or warrants are to
be determined or (y) the date on which such reclassification, consolidation,
merger, sale, transfer or share exchange is expected to become effective or
close, and the date as of which it is expected


                                       -6-

that holders of Common Stock of record shall be entitled to exchange their
shares of Common Stock for securities, cash or other property deliverable upon
such reclassification, consolidation, merger, sale, transfer, share exchange,
dissolution, liquidation or winding up, provided, that the failure to mail such
notice or any defect therein or in the mailing thereof shall not affect the
validity of the corporate action required to be specified in such notice.

10. Payment of Exercise Price. Upon exercise of this Warrant, the Holder shall
pay the aggregate Exercise Price payable with respect to the Warrant Shares for
which this Warrant is exercised by cash or by certified or official bank check
payable to the order of the Company, or by wire transfer of immediately
available funds to an account to be designated by the Company.

11. Fractional Shares. The Company shall not be required to issue or cause to be
issued fractional Warrant Shares on the exercise of this Warrant. The number of
full Warrant Shares which shall be issuable upon the exercise of this Warrant
shall be computed on the basis of the aggregate number of Warrant Shares
purchasable on exercise of this Warrant so presented. If any fraction of a
Warrant Share would, except for the provisions of this Section, be issuable on
the exercise of this Warrant, the Company shall pay an amount in cash equal to
the Exercise Price multiplied by such fraction.

12. Notices. Any and all notices or other communications or deliveries hereunder
shall be in writing and shall be deemed given and effective on the earliest of
(i) the date of transmission, if such notice or communication is delivered via
facsimile at the facsimile telephone number specified in this Section prior to
5:00 p.m. (Pacific Time) on a business day, (ii) the business day after the date
of transmission, if such notice or communication is delivered via facsimile at
the facsimile telephone number specified in this Section later than 5:00 p.m.
(Pacific Time) on any date and earlier than 11:59 p.m. (Pacific Time) on such
date, (iii) the business day following the date of mailing, if sent by
nationally recognized overnight courier service, or (iv) upon actual receipt by
the party to whom such notice is required to be given. The addresses for such
communications shall be: (i) if to the Company, to 6725 Mesa Ridge Road, Suite
100, San Diego, California 92121, facsimile (858) 552-0876, attention: Chief
Financial Officer, or (ii) if to the Holder, to the Holder at the address or
facsimile number appearing on the Warrant Register or such other address or
facsimile number as the Holder may provide to the Company in accordance with
this Section.

13. Warrant Agent. The Company shall serve as warrant agent (the "Warrant
Agent") under this Warrant. Upon prior written notice to the Holder, the Company
may appoint a new Warrant Agent. Any corporation into which the Company or any
new warrant agent may be merged or any corporation resulting from any
consolidation to which the Company or any new Warrant Agent shall be a party or
any corporation to which the Company or any new Warrant Agent transfers
substantially all of its corporate trust or shareholders services business shall
be a successor Warrant Agent under this Warrant without any further act. Any
such successor Warrant Agent shall promptly cause notice of its succession as
Warrant Agent to be mailed (by first class mail, postage prepaid) to the Holder
at the Holder's last address as shown on the Warrant Register.


                                       -7-

14. Expiration of Warrant. This Warrant shall expire and no longer be
exercisable as of the date (the "Expiration Date") that is the earlier of (i)
the seven-year anniversary of the Warrant Date; or (ii) immediately prior to the
consummation of either (A) any acquisition of the Company by means of merger,
consolidation or other form of corporate reorganization (other than a
reincorporation transaction or change of domicile) following which the holders
of the outstanding voting securities of the Company immediately prior to such
merger, consolidation or other reorganization do not hold (in their capacity as
such) equity securities representing a majority of the voting power of the
surviving or resulting entity immediately following such merger, consolidation
or other reorganization or (B) a sale of all or substantially all of the assets
of the Company other than to a buyer in which the holders of the outstanding
voting securities of the Company immediately prior to such sale hold (in their
capacity as such) equity securities representing a majority of the voting power
immediately following such sale (any of such events being referred to herein as
an "Acquisition"), in which the consideration to the stockholders of the Company
for their shares of stock consists entirely of cash; provided, however, that if
the amount of cash per share to be paid to the stockholders of the Company in
such Acquisition (the "Per Share Price") is greater than the Exercise Price, the
Company shall be obligated to pay to the Holder, upon consummation of the
Acquisition, an amount for each Warrant Share for which the Holder has not
exercised this Warrant by such date equal to the difference between the Per
Share Price and the Exercise Price.

15. Non-Cash Acquisition.

     (a) In the event of the occurrence of an Acquisition in which the
consideration does not consist entirely of cash, then as part of such
Acquisition, the Company shall make lawful provision such that the Holder shall
thereafter be entitled to receive, upon exercise of this Warrant, prior to the
Expiration Date and upon payment of the Exercise Price, the number of shares of
stock or other securities or property of the corporation or other entity
resulting from the Acquisition (or which purchases the assets of the Company)
that the Holder would have been entitled to receive in the Acquisition if this
Warrant had been exercised immediately before the Acquisition. In all events,
appropriate adjustments (as determined in good faith by the Company's Board of
Directors) shall be made in the application of the provisions of this Warrant
with respect to the rights and interests of the Holder after the Acquisition, to
the extent that the provisions of this Warrant shall be applicable after that
event, as near as reasonably may be, in relation to any shares or other property
deliverable after the Acquisition upon exercise of this Warrant.

     (b) Notwithstanding the provisions of Section 15(a), in the event of an
Acquisition covered by the terms of Section 15(a), then at the Company's option,
this Warrant shall be automatically cancelled (and the Holder will promptly
surrender this Warrant to the Company for cancellation) if, upon consummation of
the Acquisition, the Holder is paid the following amount:

          (i) if the consideration per share to be paid to the stockholders of
the Company in the Acquisition (the "Consideration Per Share") is less than the
Exercise Price, then the Holder shall be paid an amount equal to the value of
the unexercised portion of the Warrant, with such value being based on
application of the Black-Scholes model to the unexercised portion of the Warrant
(as applied by Company's Board of Directors in good faith) using the closing
price of a share of common stock of the Company on the business day prior to the
announcement of the Acquisition;

          (ii) if the Consideration Per Share is greater than the Exercise Price
but equal to or less than $12.26 per share, then the Holder shall be paid an
amount equal to the product of (A) the Consideration Per Share minus the
Exercise Price (the "Delta"), multiplied by (B) the number of Warrant Shares for
which the Holder has not exercised this Warrant by such date (the "Unexercised
Warrant Shares"), and multiplied by (C) 1.40;


                                      -8-

          (iii) if the Consideration Per Share is greater than $12.26 per share
but equal to or less than $22.26 per share, then the Holder shall be paid an
amount equal to the product of (A) the Delta, multiplied by (B) the Unexercised
Warrant Shares, and multiplied by (C) 1.30; and

          (iv) if the Consideration Per Share is $22.26 or greater, then the
Holder shall be paid an amount equal to the product of (A) the Delta, multiplied
by (B) the Unexercised Warrant Shares, and multiplied by (C) 1.20.

     (c) The value of the consideration in an Acquisition covered by this
Section 15(b) shall be determined in good by the Company's Board of Directors.
Upon any adjustment of the Exercise Price pursuant to the terms hereof, the
price ranges in subsections 15(b)(i), (ii), and (iii) hereof shall be similarly
adjusted.

16. Miscellaneous.

     (a) This Warrant shall be binding on and inure to the benefit of the
parties hereto and their respective permitted successors and assigns. This
Warrant may be amended only in writing signed by the Company and the Holder and
their permitted successors and assigns.

     (b) Subject to Section 16(a), above, nothing in this Warrant shall be
construed to give to any person or corporation other than the Company and the
Holder any legal or equitable right, remedy or cause under this Warrant. This
Warrant shall inure to the sole and exclusive benefit of the Company and the
Holder.

     (c) This Agreement shall be governed by and construed under the laws of the
State of New York as applied to agreements among New York residents, made and to
be performed entirely within the State of New York. Each of the Company and the
Holder hereby irrevocably waives personal service of process and consents to
process being served in any such suit, action or proceeding by receiving a copy
thereof sent to the Company at the address in effect for notices to it under
this instrument and agrees that such service shall constitute good and
sufficient service of process and notice thereof. Nothing contained herein shall
be deemed to limit in any way any right to serve process in any manner permitted
by law. Each party irrevocably waives, to the fullest extent permitted by
applicable law, any and all right to trial by jury in any legal proceeding
arising out of or relating to this Agreement or the transactions contemplated
hereby. If either party shall commence an action or proceeding to enforce any
provisions of this Warrant, then the prevailing party in such action or
proceeding shall be reimbursed by the other party for its attorneys fees and
other costs and expenses incurred with the investigation, preparation and
prosecution of such action or proceeding.

     (d) The headings herein are for convenience only, do not constitute a part
of this Warrant and shall not be deemed to limit or affect any of the provisions
hereof.

     (e) In case any one or more of the provisions of this Warrant shall be
invalid or unenforceable in any respect, the validity and enforceability of the
remaining terms and provisions of this Warrant shall not in any way be affected
or impaired thereby and the parties will attempt in good faith to agree upon a
valid and enforceable provision which shall be a commercially reasonable
substitute therefor, and upon so agreeing, shall incorporate such substitute
provision in this Warrant.

     (f) This Warrant is being issued pursuant to the Purchase Agreement and any
provisions hereof may be amended, waived or modified in accordance with the
amendment and modification provision set forth in the Purchase Agreement.


                                      -9-

     (g) Receipt of this Warrant by the Holder shall constitute acceptance of
and agreement to all of the terms and conditions contained herein.

17. No Rights as a Stockholder. Holder shall not, by virtue hereof, be entitled
to any rights of stockholder of the Company, either at law or equity, and the
rights of Holder are limited to those expressed in this Warrant. Nothing
contained in this Warrant shall be construed as conferring upon the Holder the
right to vote or to consent or to receive notice as a stockholder of the Company
on any matters or with respect to any rights whatsoever as a stockholder of the
Company. No dividends or interest shall be payable or accrued in respect of this
Warrant or the interest represented hereby of the Warrant Shares purchasable
hereunder until, and only to the extent that, this Warrant shall have been
exercised in accordance with its terms.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]


                                      -10-

     IN WITNESS WHEREOF, the Company has caused this COMMON STOCK WARRANT to be
duly executed by its authorized officer as of the date first indicated above.

                                       ADVENTRX PHARMACEUTICALS, INC.


                                       By:  /s/ Evan Levine
                                           -------------------------------------
                                           Evan Levine
                                           President and Chief Executive Officer

                          FORM OF ELECTION TO PURCHASE

(To be executed by the Holder to exercise the right to purchase shares of Common
Stock under the Warrant to which this form applies, issued by ADVENTRX
Pharmaceuticals, Inc. (the "Company"))

To ADVENTRX Pharmaceuticals, Inc.:

     The undersigned hereby irrevocably elects to purchase shares of common
stock, $0.001 value, of the Company (the "Common Stock") and encloses herewith
$__________ in cash, certified or official bank check or checks, which sum
represents the aggregate Exercise Price (as defined in the Warrant) for the
number of shares of Common Stock to which this Form of Election to Purchase
relates, together with any applicable taxes payable by the undersigned pursuant
to the Warrant.

     (1) The undersigned hereby elects to purchase ________ shares of the Common
Stock of the Company pursuant to the terms of the attached Warrant, and tenders
herewith payment of the exercise price in full, together with all applicable
transfer taxes, if any.

     (2) The undersigned requests that certificates for the shares of Common
Stock issuable upon this exercise be issued in the name of:

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

  (Please print name, address and social security or tax identification number)

Dated: ___________, 200__

Name of Holder:

                                        (Print)
                                                --------------------------------


                                        (By:)
                                              ----------------------------------

                                        (Name:)
                                                --------------------------------

                                        (Title:)
                                                 -------------------------------

                                        (Signature must conform in all respects
                                        to name of holder as specified on the
                                        face of the Warrant)

                               FORM OF ASSIGNMENT

           [To be completed and signed only upon transfer of Warrant]

          FOR VALUE RECEIVED, the undersigned hereby sells, assigns and
     transfers unto ________________________________ the right represented by
     the within Warrant to purchase ____________ shares of Common Stock of
     ADVENTRX Pharmaceuticals, Inc. to which the within Warrant relates and
     appoints ________________ attorney to transfer said right on the books of
     ADVENTRX Pharmaceuticals, Inc. with full power of substitution in the
     premises.

Dated:

_______________, ____


                                        ----------------------------------------
                                        (Signature  must  conform in all
                                        respects to name of holder as specified
                                        on the face of the Warrant)

                                        ---------------------------------------
                                        Address of Transferee

                                        ---------------------------------------

                                        ---------------------------------------

In the presence of:


- -------------------------------------

                                     ANNEX A

Number of Warrant Shares Number of Warrant Shares Number of Warrant Shares Date Available to be Exercised Exercised Remaining to be Exercised - ---- ------------------------- ------------------------ -------------------------

                                                                       Exhibit 5

NEITHER THIS SECURITY NOR THE SECURITIES INTO WHICH THIS SECURITY IS EXERCISABLE
HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE
SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM
REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN
EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN
AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS THEREUNDER AND IN
COMPLIANCE WITH APPLICABLE STATE SECURITIES OR BLUE SKY LAWS AS EVIDENCED BY A
LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF
WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY.

                         ADVENTRX PHARMACEUTICALS, INC.

                              COMMON STOCK WARRANT

Warrant No. WP-2                                            Dated: July 27, 2005

     ADVENTRX Pharmaceuticals, Inc., a Delaware corporation (the "Company"),
hereby certifies that, for value received, Icahn Partners Master Fund LP or its
registered assigns ("Holder"), is entitled, subject to the terms set forth
below, to purchase from the Company up to a total One Million Seven Hundred
Ninety Eight Thousand Nine Hundred Nineteen (1,798,919) shares of common stock,
$0.001 par value per share (the "Common Stock"), of the Company (each such
share, a "Warrant Share" and all such shares, the "Warrant Shares") at an
exercise price per share equal to Two Dollars Twenty-Six Cents ($2.26) (as such
exercise price may be adjusted from time to time as provided in Section 9, the
"Exercise Price"), at any time and from time to time from and after January 27,
2006 and through and including the Expiration Date (as such term is defined in
Section 14).

     This Warrant is being issued pursuant to the terms of that certain
Securities Purchase Agreement, dated July 21, 2005, by and among the Company,
the Holder and the other entities listed on Appendix A thereto (the "Purchase
Agreement"). All capitalized terms not otherwise defined herein shall have the
meaning given to them in the Purchase Agreement. This Warrant is subject to the
following terms and conditions:

1. Registration of Warrant. The Company shall register this Warrant, upon
records to be maintained by the Company for that purpose (the "Warrant
Register"), in the name of the record Holder from time to time. The Company may
deem and treat the registered Holder of this Warrant as the absolute owner
hereof for the purpose of any exercise hereof or any distribution to the Holder,
and for all other purposes, and the Company shall not be affected by notice to
the contrary.

2. Registration of Transfers and Exchanges.

     (a) The Company shall register the transfer, subject to compliance with
applicable federal and state securities laws, of any portion of this Warrant in
the Warrant Register, upon surrender of this Warrant, with the Form of
Assignment attached hereto duly completed and signed, to the Warrant Agent (as
defined in Section 13) or to the Company at its address for notice set forth in
Section 12. Upon any such registration or transfer, a new warrant to purchase
Common Stock, in substantially the form of this Warrant (any such new warrant, a
"New Warrant"), evidencing the portion of this Warrant so transferred shall be
issued to the transferee and a New Warrant evidencing the remaining portion of
this Warrant not so transferred, if any, shall be issued to the transferring
Holder. The acceptance of the New Warrant by


                                      -1-

the transferee thereof shall be deemed the acceptance of such transferee of all
of the rights and obligations of a holder of a Warrant.

     (b) This Warrant is exchangeable, upon the surrender hereof by the Holder
to the office of the Company at its address for notice set forth in Section 12
for one or more New Warrants, evidencing in the aggregate the right to purchase
the number of Warrant Shares which may then be purchased hereunder.

3. Duration and Exercise of Warrants.

     (a) This Warrant shall be exercisable by the registered Holder on any
business day before 5:00 P.M. (Pacific Time) at any time and from time to time
on or after January 27, 2006 to and including the Expiration Date. At 5:00 P.M.
(Pacific Time) on the Expiration Date, the portion of this Warrant not exercised
prior thereto shall expire and become void and of no value. Prior to the
Expiration Date, the Company may not call or otherwise redeem this Warrant.

     (b) Subject to Section 10, upon delivery of an executed Form of Election to
Purchase, together with the grid attached hereto as Annex A duly completed and
signed, to the Company at its address for notice set forth in Section 12 and
upon payment of the Exercise Price multiplied by the number of Warrant Shares
that the Holder intends to purchase hereunder, in the manner provided hereunder,
all as specified by the Holder in the Form of Election to Purchase, the Company
shall promptly (but in no event later than 5 business days after the Date of
Exercise (as defined herein)) issue or cause to be issued and cause to be
delivered to or upon the written order of the Holder and in such name or names
as the Holder may designate, a certificate for the Warrant Shares issuable upon
such exercise, which may bear a restrictive legend as set forth in Section 7. To
effect an exercise hereunder, the Holder shall not be required to physically
surrender this Warrant to the Company unless all the Warrant Shares have been
exercised. Exercises hereunder shall have the effect of lowering the number of
Warrant Shares in an amount equal to the applicable exercise, which shall be
evidenced by entries set forth on the attached Annex A. The Holder and the
Company shall maintain records showing the number of Warrant Shares exercised
and the date of such exercises. The Holder and any assignee, by acceptance of
this Warrant, acknowledge and agree that, by reason of the provisions of this
paragraph, following exercise of a portion of this Warrant, the number of shares
issuable upon exercise of this Warrant may be less than the amount stated on the
face hereof.

     (c) A "Date of Exercise" means the date on which the Company shall have
received the Form of Election to Purchase completed and duly signed.

     (d) This Warrant shall be exercisable, either in its entirety or, from time
to time, for a portion of the number of Warrant Shares.

4. Payment of Taxes. The Company will pay all documentary stamp taxes
attributable to the issuance of Warrant Shares upon the exercise of this
Warrant; provided, however, that the Company shall not be required to pay any
tax which may be payable in respect of any transfer involved in the registration
of any certificates for Warrant Shares or Warrants in a name other than that of
the Holder. The Holder shall be responsible for all other tax liability that may
arise as a result of holding or transferring this Warrant or receiving Warrant
Shares upon exercise hereof.

5. Replacement of Warrant. If this Warrant is mutilated, lost, stolen or
destroyed, the Company shall issue or cause to be issued in exchange and
substitution for and upon cancellation hereof, or in lieu of and substitution
for this Warrant, a New Warrant, but only upon receipt of evidence reasonably
satisfactory to the Company of such loss, theft or destruction and indemnity.


                                      -2-

6. Reservation of Warrant Shares. The Company covenants that it will at all
times reserve and keep available at all times out of the aggregate of its
authorized but unissued Common Stock, solely for the purpose of enabling it to
issue Warrant Shares upon exercise of this Warrant as herein provided, the
number of Warrant Shares which are then issuable and deliverable upon the
exercise of this entire Warrant, free from preemptive rights or any other actual
contingent purchase rights of persons other than the Holder (taking into account
the adjustments and restrictions of Section 9). The Company covenants that all
Warrant Shares that shall be so issuable and deliverable shall, upon issuance
and receipt of the payment of the applicable Exercise Price in accordance with
the terms hereof, be duly and validly authorized, issued and fully paid and
nonassessable.

7. Acquisition of Warrant for Personal Account. Holder understands that neither
this Warrant nor any of the Warrant Shares have been registered under the
Securities Act of 1933, as amended (the "Securities Act"). Holder also
understands that this Warrant and the Warrant Shares are being offered and sold
pursuant to an exemption from registration contained in the Securities Act based
in part upon Holder's representations contained herein and in the Purchase
Agreement. Holder represents and warrants as follows:

     (a) Holder is an accredited investor within the meaning of Rule 501 of
Regulation D promulgated under the Securities Act, is knowledgeable,
sophisticated and experienced in making, and is qualified to make, decisions
with respect to investments in securities representing an investment decision
like that involved in the purchase of this Warrant and the Warrant Shares.

     (b) Holder is acquiring this Warrant and, if this Warrant is exercised,
will acquire the Warrant Shares for its own account for investment only. Holder
has no intention of selling or distributing this Warrant or any Warrant Shares
or any arrangement or understanding with any other Persons regarding the sale or
distribution of this Warrant or any of the Warrant Shares except in accordance
with the provisions of Section 6 of the Purchase Agreement. Holder will not,
directly or indirectly, offer, sell, pledge, transfer or otherwise dispose of
(or solicit any offers to buy, purchase or otherwise acquire or take a pledge
of) this Warrant or any of the Warrant Shares except in accordance with the
provisions of Section 6 of the Purchase Agreement with respect to the Warrant
Shares or pursuant to and in accordance with the Securities Act.

     (c) Holder has received and reviewed the Memorandum and has requested,
received, reviewed and considered all other information Holder deems relevant in
making an informed decision to purchase this Warrant and the Warrant Shares.
Holder has had an opportunity to discuss the Company's business, management and
financial affairs with its management and also had an opportunity to ask
questions of officers and employees of the Company that were answered to
Holder's satisfaction.

     (d) Holder recognizes that an investment in this Warrant and the Warrant
Shares involves a high degree of risk, including a risk of total loss of
Holder's investment. Holder is able to bear the economic risk of holding this
Warrant and the Warrant Shares for an indefinite period, and has knowledge and
experience in the financial and business matters such that it is capable of
evaluating the risks of the investment in this Warrant and the Warrant Shares.

     (e) Holder has, in connection with Holder's decision to purchase this
Warrant and, if this Warrant is exercised, the Warrant Shares, not relied upon
any representations or other information (whether oral or written) other than as
set forth in the representations and warranties of the Company contained herein
or the Memorandum. Holder has, with respect to all matters relating to this
Warrant and the offer and sale of the Warrant Shares, relied solely upon the
advice of Holder's own counsel and has not relied upon or consulted any counsel
to the Placement Agent or counsel to the Company.


                                      -3-

     (f) Holder understands and acknowledges that nothing in the Memorandum,
this Warrant, any other materials presented to Holder or any communications
between Holder and the Placement Agent in connection with the purchase and sale
of this Warrant and the Warrant Shares constitutes legal, tax or investment
advice. Holder has consulted such legal, tax and investment advisors as it, in
its sole discretion, has deemed necessary or appropriate in connection with its
purchase of Warrant Shares.

     (g) Holder acknowledges that the Placement Agent has acted solely as
placement agent for the Company in connection with the offering of this Warrant
and the Warrant Shares by the Company, that the information and data provided to
Holder in connection with the transactions contemplated hereby have not been
subjected to independent verification by the Placement Agent, and that the
Placement Agent makes no representation or warranty with respect to the accuracy
or completeness of such information, data or other related disclosure material.
Holder further acknowledges that in making its decision to enter into this
Warrant and to purchase Warrant Shares that it has relied on its own examination
of the Company and the terms of, and consequences, of holding this Warrant and
the Warrant Shares. Each Holder further acknowledges that the provisions of this
Section 7(g) are also for the benefit of, and may also be enforced by, the
Placement Agent.

     (h) Holder understands that this Warrant and the Warrant Shares are
"restricted securities" as such term is defined in Rule 144 of Regulation D
promulgated under the Securities Act ("Rule 144") and must be held indefinitely
unless they are subsequently registered or qualified under applicable state and
federal securities laws or an exemption from such registration or qualification
is available. Holder understands that it may resell the Warrant Shares pursuant
to Rule 144 only after the satisfaction of certain requirements, including the
requirement that the Warrant Shares be held for at least one year prior to
resale.

     (i) Holder acknowledges and agrees that this Warrant and Warrant Shares are
subject to certain restrictions as to resale or transfer under the federal and
state securities laws. Holder agrees and understands that stop transfer
instructions will be given to the transfer agent for the Warrant Shares, and
each certificate delivered on transfer of or in substitution for any such
certificate, and each certificate representing the Warrant Shares shall have
affixed a legend in substantially the following form:

     "THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER
     THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS.
     EXCEPT AS SPECIFIED IN THIS LEGEND, SUCH SHARES MAY NOT BE SOLD, OFFERED
     FOR SALE, PLEDGED OR HYPOTHECATED, OR OTHERWISE TRANSFERRED IN THE ABSENCE
     OF A REGISTRATION STATEMENT IN EFFECT WITH RESPECT THERETO UNDER SUCH ACT
     UNLESS SOLD PURSUANT TO RULE 144 OF SUCH ACT OR UNLESS SUCH SALE, PLEDGE,
     HYPOTHECATION OR TRANSFER IS OTHERWISE EXEMPT FROM REGISTRATION AND ANY
     APPLICABLE STATE SECURITIES LAWS. THE COMPANY MAY REQUEST A WRITTEN OPINION
     OF COUNSEL, REASONABLY SATISFACTORY TO THE COMPANY, TO THE EFFECT THAT
     REGISTRATION IS NOT REQUIRED IN CONNECTION WITH SUCH SALE OR OTHER
     TRANSFER."

     (j) Holder understands that the Company is relying on the statements
contained herein to establish an exemption from registration under federal and
state securities laws. Holder will promptly notify the Company of any changes in
the information set forth in the Registration Statement (as defined in Section
6.1(a)(i) of the Purchase Agreement) regarding Holder.


                                      -4-

     (k) Holder: (i) is, to its knowledge and except as disclosed in the
Purchase Agreement, not an affiliate (as such term is defined pursuant to Rule
12b-2 promulgated under the Securities Exchange Act of 1934, as amended (the
"Exchange Act")) of any other Holder, (ii) is not constituted as a partnership,
association, joint venture or any other type of joint entity with any other
Holder, and (iii) to its knowledge and except as disclosed in the Purchase
Agreement, is not acting as part of a group (as such term is defined under
Section 13(d) of the Exchange Act) with any other Holder. If at any time after
the date of this Warrant (the "Warrant Date") Holder becomes an affiliate (as
defined herein) of any other Holder, Holder will provide prompt written notice
to the Company.

8. Obligation to Register Securities. The Company is not obligated to register
this Warrant or the Warrant Shares for resale under the Securities Act, except
as provided in the Purchase Agreement, and the Holder of this Warrant (or any
assignee hereof) is entitled to the registration rights in respect of the
Warrant Shares as only set forth in the Purchase Agreement.

9. Certain Adjustments. The Exercise Price and number of Warrant Shares issuable
upon exercise of this Warrant are subject to adjustment from time to time as set
forth in this Section 9. Upon each such adjustment of the Exercise Price
pursuant to this Section 9, the Holder shall thereafter prior to the Expiration
Date be entitled to purchase, at the Exercise Price resulting from such
adjustment, the number of Warrant Shares obtained by multiplying (x) the
Exercise Price in effect immediately prior to such adjustment by (y) the number
of Warrant Shares issuable upon exercise of this Warrant immediately prior to
such adjustment and dividing the product thereof by (z) the Exercise Price
resulting from such adjustment.

     (a) If the Company, at any time while this Warrant is outstanding, (i)
shall pay a stock dividend (except scheduled dividends paid on outstanding
preferred stock as of the Warrant Date which contain a stated dividend rate) or
otherwise make a distribution or distributions of capital stock to all the
holders of Common Stock or on any other class of capital stock payable in shares
of Common Stock, (ii) subdivide outstanding shares of Common Stock into a larger
number of shares or (iii) combine outstanding shares of Common Stock into a
smaller number of shares, the Exercise Price shall be multiplied by a fraction
of which the numerator shall be the number of shares of Common Stock (excluding
treasury shares, if any) outstanding before such event and of which the
denominator shall be the number of shares of Common Stock (excluding treasury
shares, if any) outstanding after such event. In such event, the number of
Warrant shares issuable under this Warrant shall be equitably adjusted to
reflect such event (i.e., in the event of 2:1 stock split of the Common Stock,
the number of Warrant shares shall be increased to twice the number available
for purchase prior to the record date for such stock split). Any adjustment made
pursuant to this Section shall become effective immediately after the record
date for the determination of stockholders entitled to receive such dividend or
distribution and shall become effective immediately after the effective date in
the case of a subdivision or combination, and shall apply to successive
subdivisions and combinations.

     (b) In case of any reclassification of the Common Stock or any compulsory
share exchange pursuant to which the Common Stock is converted into other
securities, cash or property, then the Holder shall have the right thereafter to
exercise this Warrant only into the shares of stock and other securities and
property receivable upon or deemed to be held by holders of Common Stock
following such reclassification or share exchange, and the Holder shall be
entitled upon such event to receive such amount of securities or property equal
to the amount of Warrant Shares such Holder would have been entitled to had such
Holder exercised this Warrant immediately prior to such reclassification or
share exchange. The terms of any such reclassification or share exchange shall
include such terms so as to continue to give to the Holder the right to receive
the securities or property set forth in this Section 9(b) upon any exercise
following any such reclassification or share exchange.


                                      -5-

     (c) If while this Warrant, or any portion thereof, remains outstanding and
unexpired, the holders of shares of Common Stock shall receive, or, on or after
the record date fixed for the determination of eligible stockholders, shall have
become entitled to receive, without payment therefor, property (including cash)
of the Company by way of dividend, then and in each case, this Warrant shall
represent the right to acquire, in addition to the number of Warrant Shares then
exercisable, such property (including cash) of the Company such Holder would
have been entitled to had such Holder exercised this Warrant immediately prior
to the record date for such payment.

     (d) For the purposes of this Section 9, the following clauses shall also be
applicable:

          (i) Record Date. In case the Company shall take a record of the
holders of its Common Stock for the purpose of entitling them (A) to receive a
dividend or other distribution payable in Common Stock or in securities
convertible or exchangeable into shares of Common Stock, or (B) to subscribe for
or purchase Common Stock or securities convertible or exchangeable into shares
of Common Stock, then such record date shall be deemed to be the date of the
issue or sale of the shares of Common Stock deemed to have been issued or sold
upon the declaration of such dividend or the making of such other distribution
or the date of the granting of such right of subscription or purchase, as the
case may be.

          (ii) Treasury Shares. The number of shares of Common Stock outstanding
at any given time shall not include shares owned or held by or for the account
of the Company, and the disposition of any such shares shall be considered an
issue or sale of Common Stock.

     (e) All calculations under this Section 9 shall be made to the nearest cent
or the nearest 1/100th of a share, as the case may be.

     (f) If:

          (i) the Company shall declare a dividend (or any other distribution)
on its Common Stock; or

          (ii) the Company shall declare a special nonrecurring cash dividend on
or a redemption of its Common Stock; or

          (iii) the Company shall authorize the granting to all holders of the
Common Stock rights or warrants to subscribe for or purchase any shares of
capital stock of any class or of any rights; or

          (iv) the approval of any stockholders of the Company shall be required
in connection with any reclassification of the Common Stock, any consolidation
or merger to which the Company is a party, any sale or transfer of all or
substantially all of the assets of the Company, or any compulsory share exchange
whereby the Common Stock is converted into other securities, cash or property;
or

          (v) the Company shall authorize the voluntary dissolution, liquidation
or winding up of the affairs of the Company,

then the Company shall cause to be mailed to each Holder at their last addresses
as they shall appear upon the Warrant Register, at least ten calendar days prior
to the applicable record or effective date hereinafter specified, a notice
stating (x) the date on which a record is to be taken for the purpose of such
dividend, distribution, redemption, rights or warrants, or if a record is not to
be taken, the date as of which the holders of Common Stock of record to be
entitled to such dividend, distributions, redemption, rights or warrants are to
be determined or (y) the date on which such reclassification, consolidation,
merger, sale, transfer or share exchange is expected to become effective or
close, and the date as of which it is expected


                                      -6-

that holders of Common Stock of record shall be entitled to exchange their
shares of Common Stock for securities, cash or other property deliverable upon
such reclassification, consolidation, merger, sale, transfer, share exchange,
dissolution, liquidation or winding up, provided, that the failure to mail such
notice or any defect therein or in the mailing thereof shall not affect the
validity of the corporate action required to be specified in such notice.

10. Payment of Exercise Price. Upon exercise of this Warrant, the Holder shall
pay the aggregate Exercise Price payable with respect to the Warrant Shares for
which this Warrant is exercised by cash or by certified or official bank check
payable to the order of the Company, or by wire transfer of immediately
available funds to an account to be designated by the Company.

11. Fractional Shares. The Company shall not be required to issue or cause to be
issued fractional Warrant Shares on the exercise of this Warrant. The number of
full Warrant Shares which shall be issuable upon the exercise of this Warrant
shall be computed on the basis of the aggregate number of Warrant Shares
purchasable on exercise of this Warrant so presented. If any fraction of a
Warrant Share would, except for the provisions of this Section, be issuable on
the exercise of this Warrant, the Company shall pay an amount in cash equal to
the Exercise Price multiplied by such fraction.

12. Notices. Any and all notices or other communications or deliveries hereunder
shall be in writing and shall be deemed given and effective on the earliest of
(i) the date of transmission, if such notice or communication is delivered via
facsimile at the facsimile telephone number specified in this Section prior to
5:00 p.m. (Pacific Time) on a business day, (ii) the business day after the date
of transmission, if such notice or communication is delivered via facsimile at
the facsimile telephone number specified in this Section later than 5:00 p.m.
(Pacific Time) on any date and earlier than 11:59 p.m. (Pacific Time) on such
date, (iii) the business day following the date of mailing, if sent by
nationally recognized overnight courier service, or (iv) upon actual receipt by
the party to whom such notice is required to be given. The addresses for such
communications shall be: (i) if to the Company, to 6725 Mesa Ridge Road, Suite
100, San Diego, California 92121, facsimile (858) 552-0876, attention: Chief
Financial Officer, or (ii) if to the Holder, to the Holder at the address or
facsimile number appearing on the Warrant Register or such other address or
facsimile number as the Holder may provide to the Company in accordance with
this Section.

13. Warrant Agent. The Company shall serve as warrant agent (the "Warrant
Agent") under this Warrant. Upon prior written notice to the Holder, the Company
may appoint a new Warrant Agent. Any corporation into which the Company or any
new warrant agent may be merged or any corporation resulting from any
consolidation to which the Company or any new Warrant Agent shall be a party or
any corporation to which the Company or any new Warrant Agent transfers
substantially all of its corporate trust or shareholders services business shall
be a successor Warrant Agent under this Warrant without any further act. Any
such successor Warrant Agent shall promptly cause notice of its succession as
Warrant Agent to be mailed (by first class mail, postage prepaid) to the Holder
at the Holder's last address as shown on the Warrant Register.


                                      -7-

14. Expiration of Warrant. This Warrant shall expire and no longer be
exercisable as of the date (the "Expiration Date") that is the earlier of (i)
the seven-year anniversary of the Warrant Date; or (ii) immediately prior to the
consummation of either (A) any acquisition of the Company by means of merger,
consolidation or other form of corporate reorganization (other than a
reincorporation transaction or change of domicile) following which the holders
of the outstanding voting securities of the Company immediately prior to such
merger, consolidation or other reorganization do not hold (in their capacity as
such) equity securities representing a majority of the voting power of the
surviving or resulting entity immediately following such merger, consolidation
or other reorganization or (B) a sale of all or substantially all of the assets
of the Company other than to a buyer in which the holders of the outstanding
voting securities of the Company immediately prior to such sale hold (in their
capacity as such) equity securities representing a majority of the voting power
immediately following such sale (any of such events being referred to herein as
an "Acquisition"), in which the consideration to the stockholders of the Company
for their shares of stock consists entirely of cash; provided, however, that if
the amount of cash per share to be paid to the stockholders of the Company in
such Acquisition (the "Per Share Price") is greater than the Exercise Price, the
Company shall be obligated to pay to the Holder, upon consummation of the
Acquisition, an amount for each Warrant Share for which the Holder has not
exercised this Warrant by such date equal to the difference between the Per
Share Price and the Exercise Price.

15. Non-Cash Acquisition.

     (a) In the event of the occurrence of an Acquisition in which the
consideration does not consist entirely of cash, then as part of such
Acquisition, the Company shall make lawful provision such that the Holder shall
thereafter be entitled to receive, upon exercise of this Warrant, prior to the
Expiration Date and upon payment of the Exercise Price, the number of shares of
stock or other securities or property of the corporation or other entity
resulting from the Acquisition (or which purchases the assets of the Company)
that the Holder would have been entitled to receive in the Acquisition if this
Warrant had been exercised immediately before the Acquisition. In all events,
appropriate adjustments (as determined in good faith by the Company's Board of
Directors) shall be made in the application of the provisions of this Warrant
with respect to the rights and interests of the Holder after the Acquisition, to
the extent that the provisions of this Warrant shall be applicable after that
event, as near as reasonably may be, in relation to any shares or other property
deliverable after the Acquisition upon exercise of this Warrant.

     (b) Notwithstanding the provisions of Section 15(a), in the event of an
Acquisition covered by the terms of Section 15(a), then at the Company's option,
this Warrant shall be automatically cancelled (and the Holder will promptly
surrender this Warrant to the Company for cancellation) if, upon consummation of
the Acquisition, the Holder is paid the following amount:

          (i) if the consideration per share to be paid to the stockholders of
the Company in the Acquisition (the "Consideration Per Share") is less than the
Exercise Price, then the Holder shall be paid an amount equal to the value of
the unexercised portion of the Warrant, with such value being based on
application of the Black-Scholes model to the unexercised portion of the Warrant
(as applied by Company's Board of Directors in good faith) using the closing
price of a share of common stock of the Company on the business day prior to the
announcement of the Acquisition;

          (ii) if the Consideration Per Share is greater than the Exercise Price
but equal to or less than $12.26 per share, then the Holder shall be paid an
amount equal to the product of (A) the Consideration Per Share minus the
Exercise Price (the "Delta"), multiplied by (B) the number of Warrant Shares for
which the Holder has not exercised this Warrant by such date (the "Unexercised
Warrant Shares"), and multiplied by (C) 1.40;


                                      -8-

          (iii) if the Consideration Per Share is greater than $12.26 per share
but equal to or less than $22.26 per share, then the Holder shall be paid an
amount equal to the product of (A) the Delta, multiplied by (B) the Unexercised
Warrant Shares, and multiplied by (C) 1.30; and

          (iv) if the Consideration Per Share is $22.26 or greater, then the
Holder shall be paid an amount equal to the product of (A) the Delta, multiplied
by (B) the Unexercised Warrant Shares, and multiplied by (C) 1.20.

     (c) The value of the consideration in an Acquisition covered by this
Section 15(b) shall be determined in good by the Company's Board of Directors.
Upon any adjustment of the Exercise Price pursuant to the terms hereof, the
price ranges in subsections 15(b)(i), (ii), and (iii) hereof shall be similarly
adjusted.

16. Miscellaneous.

     (a) This Warrant shall be binding on and inure to the benefit of the
parties hereto and their respective permitted successors and assigns. This
Warrant may be amended only in writing signed by the Company and the Holder and
their permitted successors and assigns.

     (b) Subject to Section 16(a), above, nothing in this Warrant shall be
construed to give to any person or corporation other than the Company and the
Holder any legal or equitable right, remedy or cause under this Warrant. This
Warrant shall inure to the sole and exclusive benefit of the Company and the
Holder.

     (c) This Agreement shall be governed by and construed under the laws of the
State of New York as applied to agreements among New York residents, made and to
be performed entirely within the State of New York. Each of the Company and the
Holder hereby irrevocably waives personal service of process and consents to
process being served in any such suit, action or proceeding by receiving a copy
thereof sent to the Company at the address in effect for notices to it under
this instrument and agrees that such service shall constitute good and
sufficient service of process and notice thereof. Nothing contained herein shall
be deemed to limit in any way any right to serve process in any manner permitted
by law. Each party irrevocably waives, to the fullest extent permitted by
applicable law, any and all right to trial by jury in any legal proceeding
arising out of or relating to this Agreement or the transactions contemplated
hereby. If either party shall commence an action or proceeding to enforce any
provisions of this Warrant, then the prevailing party in such action or
proceeding shall be reimbursed by the other party for its attorneys fees and
other costs and expenses incurred with the investigation, preparation and
prosecution of such action or proceeding.

     (d) The headings herein are for convenience only, do not constitute a part
of this Warrant and shall not be deemed to limit or affect any of the provisions
hereof.

     (e) In case any one or more of the provisions of this Warrant shall be
invalid or unenforceable in any respect, the validity and enforceability of the
remaining terms and provisions of this Warrant shall not in any way be affected
or impaired thereby and the parties will attempt in good faith to agree upon a
valid and enforceable provision which shall be a commercially reasonable
substitute therefor, and upon so agreeing, shall incorporate such substitute
provision in this Warrant.

     (f) This Warrant is being issued pursuant to the Purchase Agreement and any
provisions hereof may be amended, waived or modified in accordance with the
amendment and modification provision set forth in the Purchase Agreement.


                                      -9-

     (g) Receipt of this Warrant by the Holder shall constitute acceptance of
and agreement to all of the terms and conditions contained herein.

17. No Rights as a Stockholder. Holder shall not, by virtue hereof, be entitled
to any rights of stockholder of the Company, either at law or equity, and the
rights of Holder are limited to those expressed in this Warrant. Nothing
contained in this Warrant shall be construed as conferring upon the Holder the
right to vote or to consent or to receive notice as a stockholder of the Company
on any matters or with respect to any rights whatsoever as a stockholder of the
Company. No dividends or interest shall be payable or accrued in respect of this
Warrant or the interest represented hereby of the Warrant Shares purchasable
hereunder until, and only to the extent that, this Warrant shall have been
exercised in accordance with its terms.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]


                                      -10-

     IN WITNESS WHEREOF, the Company has caused this COMMON STOCK WARRANT to be
duly executed by its authorized officer as of the date first indicated above.

                                        ADVENTRX PHARMACEUTICALS, INC.


                                        By:  /s/ Evan Levine
                                            ------------------------------------
                                            Evan Levine
                                            President and Chief Executive
                                            Officer

                          FORM OF ELECTION TO PURCHASE

(To be executed by the Holder to exercise the right to purchase shares of Common
Stock under the Warrant to which this form applies, issued by ADVENTRX
Pharmaceuticals, Inc. (the "Company"))

To ADVENTRX Pharmaceuticals, Inc.:

     The undersigned hereby irrevocably elects to purchase shares of common
stock, $0.001 value, of the Company (the "Common Stock") and encloses herewith
$____________ in cash, certified or official bank check or checks, which sum
represents the aggregate Exercise Price (as defined in the Warrant) for the
number of shares of Common Stock to which this Form of Election to Purchase
relates, together with any applicable taxes payable by the undersigned pursuant
to the Warrant.

     (1) The undersigned hereby elects to purchase ________ shares of the Common
Stock of the Company pursuant to the terms of the attached Warrant, and tenders
herewith payment of the exercise price in full, together with all applicable
transfer taxes, if any.

     (2) The undersigned requests that certificates for the shares of Common
Stock issuable upon this exercise be issued in the name of:

  _____________________________________________________________________________
  (Please print name, address and social security or tax identification number)

Dated: _________, 200__

Name of Holder:

                                        (Print)
                                                --------------------------------


                                        (By:)
                                              ----------------------------------

                                        (Name:)
                                                --------------------------------

                                        (Title:)
                                                 -------------------------------

                                        (Signature must conform in all respects
                                        to name of holder as specified on the
                                        face of the Warrant)

                               FORM OF ASSIGNMENT

           [To be completed and signed only upon transfer of Warrant]

     FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers
unto ________________________________ the right represented by the within
Warrant to purchase ____________ shares of Common Stock of ADVENTRX
Pharmaceuticals, Inc. to which the within Warrant relates and appoints
________________ attorney to transfer said right on the books of ADVENTRX
Pharmaceuticals, Inc. with full power of substitution in the premises.

Dated:

_____________, ______


                                        ---------------------------------------
                                        (Signature  must  conform in all
                                        respects to name of holder as specified
                                        on the face of the Warrant)

                                        ---------------------------------------
                                        Address of Transferee

                                        ---------------------------------------

                                        ---------------------------------------

In the presence of:


- -------------------------------------

                                     ANNEX A

Number of Warrant Number of Warrant Shares Available to be Number of Warrant Shares Shares Remaining to be Date Exercised Exercised Exercised - ---- ---------------------- ------------------------ ----------------------

                                                                       Exhibit 6

                                RIGHTS AGREEMENT

     This Rights Agreement (this "Agreement"), effective July 27, 2005, is made
between Icahn Partners LP, Icahn Partners Master Fund LP, High River Limited
Partnership (collectively, the "Icahn Purchasers"), Viking Global Equities LP
and VGE III Portfolio Ltd. (collectively, "Viking," and collectively with the
Icahn Purchasers, the "Purchasers") and ADVENTRX Pharmaceuticals, Inc., a
Delaware corporation (the "Company"). Capitalized terms used but not otherwise
defined in this Agreement have the meaning ascribed to them in the Securities
Purchase Agreement, dated July 21, 2005 (the "Purchase Agreement"), by and among
the Company, the Purchasers and the other entities listed on Appendix A thereto.

                                   BACKGROUND

     A. Pursuant to the Purchase Agreement, at the Closing the Purchasers would
purchase and the Company would issue to the Purchasers an aggregate
approximately $14,000,000 of Shares and, for no additional consideration,
Warrants to purchase a number of shares of Common Stock in the aggregate equal
to 100% of the number of Shares purchased at a price of $2.26 (the "Purchaser
Warrants").

     B. The Company is entering into this Agreement to induce the Purchasers to
enter into and perform the Purchase Agreement.

                                    AGREEMENT

     In consideration of the mutual covenants and agreements set forth herein
and for good and valuable consideration, the receipt and adequacy of which are
hereby acknowledged, the parties agree as follows:

1.   CONSENT RIGHT.

     1.1 ADDITIONAL SHARES. The Company hereby agrees that it shall not at any
time after the date of the Closing and prior to July 27, 2006, without the prior
written consent of Purchasers which at the time own a majority of the Purchased
Shares (as that term is defined below), issue any shares of its Common Stock
other than Consent Excluded Shares in exchange for consideration, determined in
accordance with the following sentences, in an amount per share less than the
Exercise Price (as such term is defined in the Purchaser Warrants.) (For
purposes of this Agreement, the term "issue" includes any issue or sale of
Common Stock by the Company, whether of newly-issued shares or treasury shares,
and the term "Purchased Shares" means on any date the sum of the number of
Shares, plus the number of Warrant Shares for which the Purchaser Warrants have
been exercised, that are owned in the aggregate by the Purchasers.) In the case
of the issuance of shares of Common Stock for cash, the consideration received
by the Company shall be deemed to be the amount of cash paid therefor after
deducting any discounts, commissions or other expenses of underwriters, sales
agents or brokers allowed, paid or incurred by the Company for any underwriting
or otherwise in connection with the issuance thereof. In the case of the
issuance of shares of Common Stock for a consideration in whole or in part other
than cash, the consideration other than cash shall be valued at the fair value
thereof.

     1.2 COMMON STOCK EQUIVALENTS. The Company hereby agrees that it shall not
at any time after the date of the Closing and prior to July 27, 2006, without
the prior written consent of the Purchasers which at the time own a majority of
the Purchased Shares, issue or sell any warrants, options or other rights to
subscribe for or purchase any additional shares of Common Stock or any
securities convertible into or exchangeable for shares of Common Stock (other
than Consent Excluded Shares) (collectively, "Common Stock Equivalents"),
whether or not the rights to exchange or convert thereunder are immediately
exercisable, and the effective price per share for which Common Stock is
issuable upon the exercise, exchange or conversion of such Common Stock
Equivalents shall be less than the Exercise Price.

     1.3 CONSENT EXCLUDED SHARES. For purposes of this Agreement the term
"Consent Excluded Shares" means: (i) up to 1,000,000 shares of Common Stock or
Common Stock Equivalents issued or issuable after the date of Closing to
officers, employees, directors or consultants of the Company, as approved by the
Board under incentive plans and in addition no officer, employee, director or
consultant can receive Common Stock or Common Stock Equivalents for more than an
aggregate of 100,000 shares of Common Stock; (ii) shares of Common Stock
issuable upon exercise of warrants, options or other rights to acquire
securities of the Company, in each case, outstanding on the date of the Closing;
(iii) the Shares; (iv) the Warrants and the Warrant Shares; (v) up to 200,000
shares of Common Stock issued or issuable to existing licensors of technology of
the Company to pay expenses, royalties or milestone payments for which the
Company is or becomes obligated under any licensing or related agreement; (vi)
up to 150,000 shares of Common Stock or Common Stock Equivalents issued or
issuable after the Closing Date for non-equity financing purposes, and as
approved by the Board, to financial institutions or lessors in connection with
commercial credit arrangements, equipment financings or similar transactions;
(vii) shares of Common Stock issuable or issued pursuant to stock splits and
stock dividends; and (viii) shares of Common Stock issued or issuable by way of
dividend or other distribution on outstanding shares.

     1.4 TERMINATION OF CONSENT RIGHTS. The consent rights of the Purchasers
contained in this Section 1 shall automatically terminate and be of no further
force and effect upon the earlier of (i) July 27, 2006; (ii) the date that the
Purchasers' aggregate holdings of Purchased Shares (either of record or
beneficially) is as a result of sales or other dispositions thereof equal to
less than 50% of the aggregate number of Shares purchased by the Purchasers
pursuant to the Purchase Agreement; and (iii) at the time of a Change of
Control. For purposes of this Section 1.4 and without limitation, the holdings
of the Purchasers will be determined on a net basis after giving effect to any
sale or other disposition, contract or option to sell any shares of Common
Stock, and any swap or other arrangement that transfers to another, in whole or
in part, any of the economic consequences of ownership of shares of Common
Stock, whether such arrangement provides for settlement by delivery of
securities, the payment of cash or otherwise. For purposes of this Agreement ,
the term "Change of Control" means (A) any acquisition of the Company (whether
or not the Company is the surviving corporation) by means of merger,
consolidation or other form of corporate reorganization (other than a
reincorporation transaction or change of domicile) following which the holders
of the outstanding voting securities of the Company immediately prior to such
merger, consolidation or other reorganization do not hold (in their capacity as
such) equity securities representing a majority of the voting power of the
surviving or resulting entity immediately following such merger, consolidation
or other reorganization or (B) a sale of all or substantially all of the assets
of the Company other than to a buyer in which


                                        2

the holders of the outstanding voting securities of the Company immediately
prior to such sale hold (in their capacity as such) equity securities
representing a majority of the voting power immediately following such sale.

     1.5 ADDITIONAL RESTRICTIONS. During the period specified in Section 1.4,
the Company agrees that (i) except for the Consent Excluded Shares, it will not
issue any shares of Common Stock or Common Stock Equivalents to any executive
officer of the Company, and (ii) no Common Stock or Common Stock Equivalents
shall be issued to Mr. Evan Levine.

2.   PARTICIPATION RIGHTS.

     2.1 RIGHT AND NOTICE. Subject to the terms and conditions specified in this
Section 2, the Company grants to the Purchasers a right to participate in future
sales by the Company of any Additional Securities (as hereinafter defined), and
the Company shall not issue any Additional Securities unless the Company
complies with the provisions of this Section 2. The term "Additional Securities"
means any shares of, or securities convertible into or exercisable for any
shares of, any class of its capital stock or any other securities. Each time the
Company proposes to make an offer of any Additional Securities, the Company
shall deliver a written notice ("Notice") to the Purchasers stating (i) its bona
fide intention to offer such Additional Securities, (ii) the anticipated number
of such Additional Securities to be offered, and (iii) the anticipated price and
terms, if any, upon which it proposes to offer such Additional Securities. The
Company will not issue any Additional Securities for non-cash consideration
unless prior thereto the Company and the Purchasers which at the time own a
majority of the Purchased Shares agree on the value thereof and the Purchasers
can exercise their rights under this Section 2 by the payment of cash. The
participation rights of the Purchasers under this Section 2 shall, in the
absence of agreement among themselves, be on a pro rata basis with respect to
the number of Purchased Shares at the time owned by each Purchaser; and
provided, however, that if any Purchaser does not participate in its full pro
rata share of Additional Securities, then the other Purchasers can participate
in the sale of such remaining Additional Securities on the same pro rata basis
until such Purchasers participate in the entire amount of such Additional
Securities or such lesser amount in which they decide to participate.

     2.2 PUBLIC OFFERING. In any issuance of Additional Securities that is being
registered for sale to the public, the Purchasers shall have the right to
purchase, in the aggregate, up to (i) 50% of the Additional Securities decided
by the Company to be sold in such public offering if the offering price of the
stock is equal to or below $8.00 per share, and (ii) 20% of the Additional
Securities decided by the Company to be sold in such public offering if the
offering price of the stock is above $8.00 per share, in each case on the same
terms and conditions (including the same price, but after subtracting any
underwriting discount or commission) as the other initial public purchasers in
such offering. The Company shall have the right to disclose in any prospectus
the name of the Purchasers participating therein and the amount Additional
Securities to be purchased by them. For purposes of calculating the amount of
Additional Securities the Purchasers may purchase under this Section 2, it will
be assumed that the underwriters have fully exercised (or will fully exercise)
any over-allotment option.

     2.3 PRIVATE OFFERING. In any issuance of Additional Securities that is not
being registered for sale to the public (which shall include a PIPE financing),
the Purchasers shall have


                                        3

the right to purchase, in the aggregate, up to 50% of the amount of Additional
Securities finally agreed by the Company to be sold in such private offering to
all parties (including the Purchasers) on the same terms and conditions
(including the same price and registration rights) as the other purchasers in
such offering. In addition to the other provisions of this Section 2.3, the
Purchasers desiring to exercise their rights under this Section 2.3 must make
the same representations and warranties as the other purchasers under this
Section 2.3 to establish an exemption from registration under the Securities
Act.

     2.4 NOTICE AND INTENTION TO PURCHASE. The Company shall deliver the Notice
to the Purchasers at least 15 days but not later than 30 days prior to the sale
of the Additional Securities, and each Purchaser shall give the Company notice
that it may participate in purchasing, up to that portion of such Additional
Securities to which it is entitled hereunder by giving notice to the Company of
its intention to do the same within 10 days after its receipt of the Notice.
Thereafter, in connection with any offering under Section 2.2 or Section 2.3 for
which a notice to participate is given under Section 2.4, the Purchasers must
agree and affirm to the Company on the day of pricing of the Additional
Securities (but immediately following the actual pricing of the Additional
Securities) that it or they are committed to purchase the amount of the
Additional Securities selected by them, at the final price and terms for the
offering, in which event it or they will have the right and obligation to
participate in such offering.

     2.5 NON-ELECTION. If the Purchasers elect not to purchase any Additional
Securities or do not give notice of participation in accordance with this
Section 2, the Company may, during the 45-day period following the expiration of
the period provided in Section 2.4, offer the Additional Securities to any
person or persons at a price not less than, of a quantity not more than and upon
terms no more favorable to the offeree than those specified in the Notice.
Thereafter, the right provided hereunder shall be deemed to be revived and
Additional Securities shall not be offered unless first offered to the
Purchasers in accordance herewith.

     2.6 PARTICIPATION EXCLUDED SHARES. The rights granted in this Section 2
shall not be applicable to the issuance or sale of any Participation Excluded
Shares. For purposes of this Agreement the term "Participation Excluded Shares"
means: (i) the Consent Excluded Shares covered by sections (ii), (iii), (iv),
(vii) and (viii) of Section 1.3 hereof; (ii) up to 4,500,000 shares in the
aggregate of Common Stock or Common Stock Equivalents issued or issuable after
the date of Closing to officers, employees, directors or consultants of the
Company, as approved by the Board under incentive plans; (iii) up to 1,500,000
shares in the aggregate of Common Stock issued or issuable to existing licensors
of technology of the Company to pay expenses, royalties or milestone payments
for which the Company is or becomes obligated under any licensing or related
agreement; and (iv) up to 1,000,000 shares in the aggregate of Common Stock or
Common Stock Equivalents issued or issuable after the Closing Date for
non-equity financing purposes, and as approved by the Board, to financial
institutions or lessors in connection with commercial credit arrangements,
equipment financings or similar transactions. Furthermore, with respect to the
Common Stock and Common Stock Equivalents covered by sections (ii), (iii) and
(iv) of the preceding sentence, no more than 20% of the amount of such Common
Stock or Common Stock Equivalents may be issued in any twelve-month period
commencing on the date hereof.


                                        4

     2.7 TERMINATION OF PARTICIPATION RIGHTS. The participation rights of the
Purchasers contained in this Section 2 shall automatically terminate and be of
no further force and effect upon the earlier of (i) July 27, 2012; (ii) the date
that the Purchasers' aggregate holdings of Purchased Shares (either of record or
beneficially) is as a result of sales or other dispositions thereof equal to
less than 50% of the aggregate number of Shares purchased by the Purchasers
pursuant to the Purchase Agreement; and (iii) at the time of a Change of
Control. For purposes of this Section 2.7 and without limitation, the holdings
of the Purchasers will be determined on a net basis after giving effect to any
sale or other disposition, contract or option to sell any shares of Common
Stock, and any swap or other arrangement that transfers to another, in whole or
in part, any of the economic consequences of ownership of shares of Common
Stock, whether such arrangement provides for settlement by delivery of
securities, the payment of cash or otherwise.

3. CHANGE OF CONTROL PROVISIONS. At any time that the Company makes, receives or
considers any proposal for a transaction which, if consummated, would constitute
a Change of Control and the Board of Directors has decided to approve such
transaction and, if required, recommend the stockholders vote to approve such
transaction, then the Company agrees that (a) no binding or definitive agreement
with respect thereto shall contain any break-up fee provisions or similar types
of provisions, except that the Company may agree to reimburse reasonable
out-of-pocket due diligence expenses, and (b) it shall not consummate such
Change of Control unless the Company shall call a stockholders' meeting or
conduct a consent solicitation for approval by the stockholders of the Change of
Control, in which meeting or solicitation the approval of the holders of the
number of shares required by the Delaware General Corporation Law and/or any
stock exchange to approve the Change of Control is obtained or, if no such
approval is required, the approval of the holders of a majority of the
outstanding shares of stock entitled to vote in attendance at a meeting at which
a quorum is present is obtained.

4. BOARD OF DIRECTORS. Effective promptly after the Closing, the Company shall
set the authorized number of Board directors at six and the Company shall
appoint a person suggested by the Purchasers which at the time own a majority of
the Purchased Shares to the vacancy so created; provided that such person, if
anyone other than Mr. Carl Icahn, would not subject the Company to making any
disclosures under Item 401(f) of SEC Regulation S-K in any proxy statement (the
"Criteria"). Prior to any appointment of such person, he or she will provide all
of the information required by the Form 8-K which will need to be filed with
respect thereto. Thereafter, as long as the Purchasers have any participation
rights under Section 2 hereof, the Company shall cause the Board of Directors to
nominate a Board nominee selected by the Purchasers in the manner set forth
above as long as such person, if anyone other than Mr. Carl Icahn, satisfies the
Criteria.

5. RIGHTS PLAN AND CLASSIFIED BOARD.

     5.1 RIGHTS PLAN. The Company agrees that as long as the Purchasers have any
participation rights under Section 2 hereof, it shall not adopt any rights plan.
For purposes of this Agreement, a "rights plan" shall include any plan,
agreement or other device adopted by the Board of Directors designed to prevent
a hostile takeover by increasing the takeover cost either through the issuance
of new rights, common or preferred shares or any other security or device that
are issued to shareholders of the Company other than all shareholders of the
Company that carry severe redemption provisions, favorable purchase provisions
or otherwise.


                                        5

     5.2 CLASSIFIED BOARD. The Company hereby agrees that as long as the
Purchasers have any participation rights under Section 2 hereof, it shall not
adopt a classified Board, nor change the authorized number of Board directors as
set forth in Section 4.

     5.3 CHARTER AMENDMENTS. In furtherance of Sections 5.1 and 5.2, the Company
agrees that it shall hold a meeting of its stockholders, or conduct a written
consent solicitation of stockholders, to propose amendments to its charter
documents to expressly prohibit the adoption of a rights plan and the adoption
of a classified board (the "Proposals"). The Company agrees that the Board of
Directors shall recommend the Proposals and the Company shall use its best
efforts to procure stockholder approval of the Proposals. The Company shall hold
said stockholders' meeting, or complete the written consent solicitation, no
later than November 15, 2005, and shall set the record date for such meeting or
solicitation after the date of the Closing. However, if for any reason the Board
of Directors of the Company breaches this Agreement by adopting a rights plan or
implementing a classified Board of Directors, then within 30 days thereafter any
or all of the Purchasers can elect to rescind its purchase of any of (i) the
Shares purchased by it and Warrant Shares exercised by it which in each case
have not been sold or otherwise disposed of, and (ii) the Warrants. The
rescission price for any such Shares and Warrant Shares shall equal the greater
of $2.50 or the average of the closing prices of the Common Stock for the 10
business days before any such notice is given (the "Average Price"). The
rescission price for any unexercised Warrant shall be the number of shares for
which the Warrant has not been exercised multiplied by the difference between
the Average Price minus the $1.85. The Company shall also reimburse the
Purchasers for its costs in the negotiation of the Purchase Agreement, the
Purchaser Warrants and this Agreement.

     5.4 VOTING. At the Closing, the Company shall present the Purchasers with
the written binding agreement of the beneficial owners of not less than an
aggregate of 9,000,000 shares of Common Stock to vote such shares owned by them
at the time of the meeting or solicitation for the adoption of such amendments.
The Purchasers agree to vote all shares of Common Stock owned by them at the
time of such meeting or solicitation in favor of such amendments.

6.   MISCELLANEOUS.

     6.1  NOTICES.

          (A) All notices, requests, consents and other communications hereunder
shall be in writing, shall be mailed by first-class registered or certified
airmail, confirmed facsimile or nationally recognized overnight express courier
postage prepaid, and shall be as addressed as follows:


                                        6

          if to the Company, to:

               ADVENTRX Pharmaceuticals, Inc.
               6725 Mesa Ridge Road, Suite 100
               San Diego, California 92121
               Attention: Chief Executive Officer
               Telephone No.: (858) 552-0866
               Telecopy No.: (858) 552-0876

          with a copy to (not to constitute notice):

               Bingham McCutchen LLP
               Three Embarcadero Center
               San Francisco, CA 94111
               Attention: Hank Evans
                          Francis Sarena
               Telephone No.: (415) 393-2000
               Telecopy No.: (415) 393-2286

          if to any Icahn Purchaser, to such Purchaser at:

               767 Fifth Avenue
               47th Floor
               New York, NY 10153
               Attention: Marc Weitzen, Esq.
               Telephone No.: (212) 702-4300
               Telecopy No.: (212) 750-5815

          if to Viking:

               55 Railroad Avenue
               Greenwich, CT 06830
               Attention: Alex Denner
               Telephone No.: (203) 863-5000
               Telecopy No.: (203) 625-8705

or at such other address or addresses as may have been previously furnished to
the other party in writing in accordance with this Section 6.1.

          (B) Such notices or other communications shall be deemed delivered
upon receipt, in the case of overnight delivery, personal delivery, facsimile
transmission (as evidenced by the confirmation thereof), or mail.

     6.2 AMENDMENTS. Any term of this Agreement may be amended and the
observance of any term of this Agreement may be waived (either generally or in a
particular instance and either retroactively or prospectively) only with the
written consent of the Company and Icahn.


                                        7

     6.3 HEADINGS. The headings of the various sections of this Agreement are
for convenience of reference only and shall not be deemed to be part of this
Agreement.

     6.4 SEVERABILITY. In the event that any provision in this Agreement is held
to be invalid, illegal or unenforceable in any respect, the validity, legality
and enforceability of the remaining provisions contained herein shall not in any
way be affected or impaired thereby.

     6.5 INJUNCTIVE RELIEF. Notwithstanding any other provisions of this
Agreement, a breach of any of the provisions of this Agreement by the Company
will cause the Purchasers irreparable damage for which recovery of money damages
shall be inadequate, and the Purchasers shall therefore be entitled to obtain
injunctive relief (without any requirement to post any bond) and specific
performance to protect their rights and enforce the terms and provisions under
this Agreement in addition to any and all remedies available to them at law or
in equity.

     6.6 GOVERNING LAW AND FORUM. This Agreement shall be governed by and
construed in accordance with the laws of the State of New York applicable to
agreements made and to be fully performed therein. The parties hereto agree to
submit to the exclusive jurisdiction of the federal and state courts of the
State of New York with respect to the interpretation of this Agreement or for
the purposes of any action arising out of or related to this Agreement.

     6.7 COUNTERPARTS. This Agreement may be executed in counterparts, each of
which shall constitute an original, and all of which together shall constitute
one and the same instrument. In the event that any signature is delivered via
facsimile transmission, such signature shall create a valid and binding
obligation of the party executing (or on whose behalf such signature is
executed) the same with the same force and effect as if such facsimile signature
page were an original hereof.

     6.8 ENTIRE AGREEMENT. This Agreement contains the entire understanding of
the parties with respect to the matters covered herein, supersedes all prior
agreements and understandings with respect to such matters and executed by and
between the Company and Icahn.

     6.9 EXPENSES. Each party shall pay all costs and expenses incurred by it in
connection with the execution and delivery of this Agreement, and all the
transactions contemplated thereby, including fees of legal counsel.

        [Remainder of page intentionally blank; signature page follows.]


                                        8

     IN WITNESS WHEREOF, the parties hereto have caused this Rights Agreement to
be executed as of the date first written above.

                                        ADVENTRX PHARMACEUTICALS, INC.


                                        By:  /s/ Evan Levine
                                            ------------------------------------
                                        Name:  Evan Levine
                                              ----------------------------------
                                        Title:  Chief Executive Officer
                                               ---------------------------------


                                        ICAHN PARTNERS LP


                                        By:  /s/ Keith Meister
                                            ------------------------------------
                                        Name: Keith Meister
                                        Title: Authorized Signatory


                                        ICAHN PARTNERS MASTER FUND LP


                                        By: /s/ Keith Meister
                                            ------------------------------------
                                        Name: Keith Meister
                                        Title: Authorized Signatory


                                        HIGH RIVER LIMITED PARTNERSHIP

                                        By: Hopper Investments, LLC, its
                                            general partner

                                        By: Barberry Corp., its sole member


                                        By:  /s/ Edward E. Mattner
                                            ------------------------------------
                                        Name: Edward E. Mattner
                                        Title: Authorized Signatory


                                        VIKING GLOBAL EQUITIES LP


                                        By: /s/ Brian Smith
                                            ------------------------------------
                                        Name:  Brian Smith
                                              ----------------------------------
                                        Title:  Chief Financial Officer
                                               ---------------------------------


                                        VGE III PORTFOLIO LTD.


                                        By:  /s/ Brian Smith
                                            ------------------------------------
                                        Name:  Brian Smith
                                              ----------------------------------
                                        Title:  Chief Financial Officer
                                               ---------------------------------

                       SIGNATURE PAGE TO RIGHTS AGREEMENT

                                                                       Exhibit 7

                                SUPPORT AGREEMENT

     THIS SUPPORT AGREEMENT ("Agreement") is made and entered into as of July
27, 2005, by and between the undersigned stockholder of ADVENTRX
Pharmaceuticals, Inc., a Delaware corporation (the "Company"), and Icahn
Partners LP, Icahn Partners Master Fund LP, High River Limited Partnership,
Viking Global Equities LP and VGI III Portfolio Ltd. (collectively, the
"Purchasers").

     The Company has entered into a Rights Agreement (the "Rights Agreement")
dated as of July 27, 2005 among the Company and the Purchasers. In Section 5.3
of the Rights Agreement, the Company agrees to hold a stockholders' meeting or
solicit the consent of its stockholders to amend the Company's charter documents
to expressly state that the Company shall not adopt a "rights" plan (as defined
in the Rights Agreement) nor adopt a classified board (the "Amendments").

     The undersigned is a stockholder of the Company and currently has
beneficial ownership of that number of shares of common stock listed under his
or her signature below. In order to induce the Purchasers to enter into the
Rights Agreement and the Purchase Agreement (as defined in the Rights
Agreement), the undersigned is entering into this Agreement for the benefit of
the Purchasers.

     NOW, THEREFORE, in consideration of the transactions contemplated by the
Rights Agreement and the Purchase Agreement and the mutual promises and
covenants contained herein, the parties agree as follows:

     1. The undersigned agrees that he intends to, and will, vote (or cause to
be voted) all of the shares of capital stock of the Company beneficially owned
by the undersigned on the record date for the stockholder meeting or consent
(the "Shares") in favor of the Amendments at any meeting of stockholders of the
Company at which a vote on the Amendments, or in any other circumstance upon
which a vote, consent or other approval with respect to the Amendments, is
sought.

     2. The Purchasers acknowledge that the number of Shares may not be equal to
the number of shares of capital stock beneficially owned by the undersigned on
the date hereof.

     3. The undersigned acknowledges and agrees that the Purchasers could not be
made whole by monetary damages in the event of any default by the undersigned of
the terms and conditions set forth in this Agreement. It is accordingly agreed
and understood that the Purchasers, in addition to any other remedy which they
may have at law or in equity, shall be entitled to an injunction or injunctions
to prevent breaches of this Agreement and specifically to enforce the terms and
provisions hereof in any action instituted in any state or federal court having
appropriate jurisdiction.

     4. Any term or provision of this Agreement which is invalid or
unenforceable in any jurisdiction shall, as to that jurisdiction, be ineffective
to the extent of such invalidity or unenforceability without rendering invalid
or unenforceable the remaining terms and provisions of this Agreement or
affecting the validity or enforceability of any of the terms or provisions of

this Agreement in any other jurisdiction. If any provision of this Agreement is
so broad as to be unenforceable, the provision shall be interpreted to be only
so broad as is enforceable.

     5. The covenants and obligations set forth in this Agreement shall expire
and be of no further force and effect upon the earlier of (a) the termination of
the participation rights of the Purchasers as defined in the Rights Agreement
under Section 2.7 thereof or (b) the approval of the Amendments by the necessary
vote of the Company's stockholders.

     6. This Agreement shall be governed by and construed in accordance with the
laws of the State of New York applicable to agreements made and to be fully
performed therein.

                  [Remainder of page intentionally left blank.]


                                       2

     IN WITNESS WHEREOF, this Agreement has been duly executed and delivered by
the undersigned as of the day and year first above written.

                                         /s/ Evan Levine
                                        ----------------------------------------
                                           Evan Levine
                                        ----------------------------------------
                                               (Please print or type name)

                                        Shares of common stock:  4,194,399
                                                                ----------------

                                         /s/ Matthew Balk
                                        ----------------------------------------

                                           Matthew Balk
                                        ----------------------------------------
                                               (Please print or type name)

                                        Shares of common stock:  3,800,000
                                                                ----------------

                                         /s/ Jason Adelman
                                        ----------------------------------------
                                           Jason Adelman
                                        ----------------------------------------
                                               (Please print or type name)

                                        Shares of common stock:  758,000
                                                                ----------------

                                         /s/ Ross Johnson
                                        ----------------------------------------
                                           Ross Johnson
                                        ----------------------------------------
                                               (Please print or type name)

                                        Shares of common stock:  1,215,064
                                                                ----------------


                                        ICAHN PARTNERS LP


                                        By: /s/ Keith Meister
                                            ------------------------------------
                                        Name: Keith Meister
                                        Title: Authorized Signatory


                                        ICAHN PARTNERS MASTER FUND LP


                                        By:  /s/ Keith Meister
                                            ------------------------------------
                                        Name: Keith Meister
                                        Title: Authorized Signatory


                                        HIGH RIVER LIMITED PARTNERSHIP

                                        By: Hopper Investments, LLC, its general
                                            partner

                                        By: Barberry Corp., its sole member


                                        By: /s/ Edward E. Mattner
                                            ------------------------------------
                                        Name: Edward E. Mattner
                                        Title: Authorized Signatory


                                        VIKING GLOBAL EQUITIES LP


                                        By:  /s/ Brian Smith
                                            ------------------------------------
                                        Name:  Brian Smith
                                              ----------------------------------
                                        Title:  Chief Financial Officer
                                               ---------------------------------


                                        VGE III PORTFOLIO LTD.


                                        By:  /s/ Brian Smith
                                            ------------------------------------
                                        Name:  Brian Smith
                                              ----------------------------------
                                        Title:  Chief Financial Officer
                                               ---------------------------------

                     SIGNATURE PAGE TO THE SUPPORT AGREEMENT