SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

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

Enzon Pharmaceuticals, Inc.

(Name of Issuer)

Common Stock, Par Value $0.01
(Title of Class of Securities)

293904108
(CUSIP Number)

Marc Weitzen, Esq.
Icahn Capital LP
767 Fifth Avenue, 47^th Floor
New York, New York 10153
(212) 702-4388

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

March 4, 2008
(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 Section 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box o.

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).

 

 

1		NAME OF REPORTING PERSON High River Limited Partnership
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
		(a)   o
		(b)   o
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)
		o
6		CITIZENSHIP OR PLACE OF ORGANIZATION
		Delaware
			7		SOLE VOTING POWER
NUMBER OF					614,420
SHARES			8		SHARED VOTING POWER
BENEFICIALLY
OWNED BY					0
EACH			9		SOLE DISPOSITIVE POWER
REPORTING
PERSON					614,420
WITH:			10		SHARED DISPOSITIVE POWER
					0
11		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
		614,420
12		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
		o
13		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
		1.39%
14		TYPE OF REPORTING PERSON
		PN

1		NAME OF REPORTING PERSON Hopper Investments LLC
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
		(a)   o
		(b)   o
3		SEC USE ONLY
4		SOURCE OF FUNDS
5		CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
		o
6		CITIZENSHIP OR PLACE OF ORGANIZATION
		Delaware
			7		SOLE VOTING POWER
NUMBER OF					0
SHARES			8		SHARED VOTING POWER
BENEFICIALLY
OWNED BY					614,420
EACH			9		SOLE DISPOSITIVE POWER
REPORTING
PERSON					0
WITH:			10		SHARED DISPOSITIVE POWER
					614,420
11		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
		614,420
12		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
		o
13		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
		1.39%
14		TYPE OF REPORTING PERSON
		OO

1		NAME OF REPORTING PERSON Barberry Corp.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
		(a)   o
		(b)   o
3		SEC USE ONLY
4		SOURCE OF FUNDS
5		CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
		o
6		CITIZENSHIP OR PLACE OF ORGANIZATION
		Delaware
			7		SOLE VOTING POWER
NUMBER OF					0
SHARES			8		SHARED VOTING POWER
BENEFICIALLY
OWNED BY					614,420
EACH			9		SOLE DISPOSITIVE POWER
REPORTING
PERSON					0
WITH:			10		SHARED DISPOSITIVE POWER
					614,420
11		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
		614,420
12		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
		o
13		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
		1.39%
14		TYPE OF REPORTING PERSON
		CO

1		NAME OF REPORTING PERSON Icahn Partners Master Fund LP
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
		(a)   o
		(b)   o
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)
		o
6		CITIZENSHIP OR PLACE OF ORGANIZATION
		Cayman Islands
			7		SOLE VOTING POWER
NUMBER OF					1,073,373
SHARES			8		SHARED VOTING POWER
BENEFICIALLY
OWNED BY					0
EACH			9		SOLE DISPOSITIVE POWER
REPORTING
PERSON					1,073,373
WITH:			10		SHARED DISPOSITIVE POWER
					0
11		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
		1,073,373
12		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
		o
13		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
		2.42%
14		TYPE OF REPORTING PERSON
		PN

1		NAME OF REPORTING PERSON Icahn Partners Master Fund II LP
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
		(a)   o
		(b)   o
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)
		o
6		CITIZENSHIP OR PLACE OF ORGANIZATION
		Cayman Islands
			7		SOLE VOTING POWER
NUMBER OF					380,040
SHARES			8		SHARED VOTING POWER
BENEFICIALLY
OWNED BY					0
EACH			9		SOLE DISPOSITIVE POWER
REPORTING
PERSON					380,040
WITH:			10		SHARED DISPOSITIVE POWER
					0
11		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
		380,040
12		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
		o
13		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
		0.86%
14		TYPE OF REPORTING PERSON
		PN

1		NAME OF REPORTING PERSON Icahn Partners Master Fund III LP
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
		(a)   o
		(b)   o
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)
		o
6		CITIZENSHIP OR PLACE OF ORGANIZATION
		Cayman Islands
			7		SOLE VOTING POWER
NUMBER OF					145,653
SHARES			8		SHARED VOTING POWER
BENEFICIALLY
OWNED BY					0
EACH			9		SOLE DISPOSITIVE POWER
REPORTING
PERSON					145,653
WITH:			10		SHARED DISPOSITIVE POWER
					0
11		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
		145,653
12		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
		o
13		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
		0.33%
14		TYPE OF REPORTING PERSON
		PN

1		NAME OF REPORTING PERSON Icahn Offshore LP
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
		(a)   o
		(b)   o
3		SEC USE ONLY
4		SOURCE OF FUNDS
5		CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
		o
6		CITIZENSHIP OR PLACE OF ORGANIZATION
		Delaware
			7		SOLE VOTING POWER
NUMBER OF					0
SHARES			8		SHARED VOTING POWER
BENEFICIALLY
OWNED BY					1,599,066
EACH			9		SOLE DISPOSITIVE POWER
REPORTING
PERSON					0
WITH:			10		SHARED DISPOSITIVE POWER
					1,599,066
11		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
		1,599,066
12		CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
		o
13		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
		3.61%
14		TYPE OF REPORTING PERSON
		PN

SCHEDULE 13D
CUSIP No.		293904108

SCHEDULE 13D
CUSIP No.		293904108

SCHEDULE 13D
CUSIP No.		293904108

SCHEDULE 13D
CUSIP No.		293904108

SCHEDULE 13D
CUSIP No.		293904108

SCHEDULE 13D
CUSIP No.		293904108

SCHEDULE 13D
CUSIP No.		293904108

SCHEDULE 13D
CUSIP No.		293904108

SCHEDULE 13D

Item 1. Security and Issuer

     This statement relates to the Common Stock, par value $0.01 (the “Shares”), issued by Enzon Pharmaceuticals, Inc. (the “Issuer”). The address of the principal executive offices of the Issuer is 685 Route 202/206, Bridgewater, NJ 08807.

Item 2. Identity and Background

     The persons filing this statement are High River Limited Partnership (“High River”), Hopper Investments LLC (“Hopper”), Barberry Corp. (“Barberry”), Icahn Partners Master Fund LP (“Icahn Master”), Icahn Partners Master Fund II LP (“Icahn Master II”), Icahn Partners Master Fund III LP (“Icahn Master III”), Icahn Offshore LP (“Icahn Offshore”), Icahn Partners LP (“Icahn Partners”), Icahn Onshore LP (“Icahn Onshore”), Icahn Capital LP (“Icahn Capital”), IPH GP LLC (“IPH”), Icahn Enterprises Holdings L.P. (“Icahn Enterprises Holdings”), Icahn Enterprises G.P. Inc. (“Icahn Enterprises GP”), Beckton Corp. (“Beckton”), and Carl C. Icahn (collectively, the “Reporting Persons”).

     The principal business address of each of (i) High River, Hopper, Barberry, Icahn Offshore, Icahn Partners, Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP and Beckton is White Plains Plaza, 445 Hamilton Avenue — Suite 1210, White Plains, NY 10601, (ii) Icahn Master, Icahn Master II and Icahn Master III is c/o Walkers SPV Limited, P.O. Box 908GT, 87 Mary Street, George Town, Grand Cayman, Cayman Islands, and (iii) Mr. Icahn is c/o Icahn Associates Corp., 767 Fifth Avenue, 47^th Floor, New York, NY 10153.

     Barberry is the sole member of Hopper, which is the general partner of High River. Icahn Offshore is the general partner of each of Icahn Master, Icahn Master II and Icahn Master III. Icahn Onshore is the general partner of Icahn Partners. Icahn Capital is the general partner of each of Icahn Offshore and Icahn Onshore. Icahn Enterprises Holdings is the sole member of IPH, which is the general partner of Icahn Capital. Beckton is the sole stockholder of Icahn Enterprises GP, which is the general partner of Icahn Enterprises Holdings. Carl C. Icahn is the sole stockholder of each of Barberry and Beckton. As such, Mr. Icahn is in a position indirectly to determine the investment and voting decisions made by each of the Reporting Persons. In addition, Mr. Icahn is the indirect holder of approximately 91% of the outstanding depositary units representing limited partnership interests in Icahn Enterprises L.P. (“Icahn Enterprises”). Icahn Enterprises GP is the general partner of Icahn Enterprises, which is the sole limited partner of Icahn Enterprises Holdings.

     Each of High River and Barberry 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. Each of Icahn Master, Icahn Master II, Icahn Master III and Icahn Partners is primarily engaged in the business of investing in securities. Icahn Offshore is primarily engaged in the business of serving as the general partner of each of Icahn Master, Icahn Master II and Icahn Master III. Icahn Onshore is primarily engaged in the business of serving as the general partner of Icahn Partners. Icahn Capital is primarily engaged in the business of serving as the general partner of each of Icahn Offshore and Icahn Onshore. IPH is primarily engaged in the business of serving as the general partner of Icahn Capital. Icahn Enterprises Holdings is primarily engaged in the business of holding direct or indirect interests in various operating businesses. Icahn Enterprises GP is primarily engaged in the business of serving as the general partner of each of Icahn Enterprises and Icahn Enterprises Holdings. Beckton is primarily engaged in the business of holding the capital stock of Icahn Enterprises GP.

     Carl C. Icahn’s present principal occupation or employment is serving as (i) Chief Executive

Officer of Icahn Capital LP, a wholly owned subsidiary of Icahn Enterprises, through which Mr. Icahn manages various private investment funds, including Icahn Partners, Icahn Master, Icahn Master II and Icahn Master III, (ii) Chairman of the Board of Icahn Enterprises GP, the general partner of Icahn Enterprises, a New York Stock Exchange listed diversified holding company engaged in a variety of businesses, including investment management, metals, real estate and home fashion, and (iii) Chairman of the Board and a director of Starfire Holding Corporation (“Starfire”), a holding company engaged in the business of investing in and/or holding securities of various entities, and as Chairman of the Board and a director of various of Starfire’s subsidiaries.

     The name, citizenship, present principal occupation or employment and business address of each director and executive officer of the Reporting Persons are set forth in Schedule A attached hereto.

     None of the Reporting Persons nor any manager or executive officer of the Reporting Persons, 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

     The aggregate purchase price of the 3,072,103 Shares purchased by the Reporting Persons collectively was $26,063,603 (including commissions). The source of funding for the purchase of these Shares was the general working capital of the respective purchasers. The Shares are held by the Reporting Persons in margin accounts together with other securities. Such margin accounts may from time to time have debit balances. Part of the purchase price of Shares purchased by High River was obtained through margin borrowing. Shares purchased by High River are maintained in a margin account that includes positions in securities in addition to Shares. The indebtedness of High River’s margin account as of March 13, 2008 was approximately $1,260,736,012.32

Item 4. Purpose of Transaction

     The Reporting Persons acquired their positions in the Shares in the belief that they were undervalued. The Reporting Persons have had conversations with members of the Issuer’s management during which the Reporting Persons expressed their concern with the current Share price. In addition, during these conversations, the Reporting Persons indicated that management should conduct a comprehensive review of strategic transactions that could enhance shareholder value, including a spinoff or other monetization of certain assets, such as royalty streams and products with limited market potential; or a sale of the entire company. No agreement, arrangement or understanding was reached between the Reporting Persons and management. The Reporting Persons intend to seek to have further conversations with management. The Reporting Persons may, from time to time and at any time, acquire additional Shares in the open market or otherwise and reserve the right to dispose of any or all of their Shares in the open market or otherwise, at any time and from time to time, and to engage in any hedging or similar transactions with respect to the Shares.

Item 5. Interest in Securities of the Issuer

     (a) The Reporting Persons may be deemed to beneficially own, in the aggregate, 3,072,103 Shares, representing approximately 6.93% of the Issuer’s outstanding Shares (based upon the 44,322,923 Shares

stated to be outstanding as of February 27, 2008 by the Issuer in the Issuer’s Form 10-K filed with the Securities and Exchange Commission on February 29, 2008 for the fiscal year ended December 31, 2007).

     (b) High River has sole voting power and sole dispositive power with regard to 614,420 Shares. Each of Hopper, Barberry and Carl C. Icahn has 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 1,073,373 Shares. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has shared voting power and shared dispositive power with regard to such Shares. Icahn Master II has sole voting power and sole dispositive power with regard to 380,040 Shares. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has shared voting power and shared dispositive power with regard to such Shares. Icahn Master III has sole voting power and sole dispositive power with regard to 145,653 Shares. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has 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 858,617 Shares. Each of Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has 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 indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares which High River directly beneficially owns. Each of Hopper, Barberry and Mr. Icahn disclaims beneficial ownership of such Shares for all other purposes. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn, by virtue of their relationships to each of Icahn Master, Icahn Master II and Icahn Master III (as disclosed in Item 2), may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares which each of Icahn Master, Icahn Master II and Icahn Master III directly beneficially owns. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn disclaims beneficial ownership of such Shares for all other purposes. Each of Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn, by virtue of their relationships to Icahn Partners (as disclosed in Item 2), may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares which Icahn Partners directly beneficially owns. Each of Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn disclaims beneficial ownership of such Shares for all other purposes.

     (c) The following table sets forth all transactions with respect to Shares effected during the past sixty (60) days by any of the Reporting Persons. All such transactions were purchases of Shares effected in the open market, and the table includes commissions paid in per share prices.

Name of						No. of Shares				Purchase Price Per
Reporting Person		Date of Transaction				Purchased				Share (U.S.$)
High River			03/04/08				20,000				8.8221
High River			03/05/08				24,659				8.6622
High River			03/06/08				30,000				8.6558
High River			03/07/08				40,000				8.4898
High River			03/10/08				30,502				8.3880
High River			03/11/08				25,000				8.2767
High River			03/12/08				4,260				8.3938
Icahn Master			03/05/08				38,605				8.6622
Icahn Master			03/06/08				55,235				8.6558

Name of						No. of Shares				Purchase Price Per
Reporting Person		Date of Transaction				Purchased				Share (U.S.$)
Icahn Master			03/07/08				68,674				8.4898
Icahn Master			03/10/08				52,367				8.3880
Icahn Master			03/11/08				42,921				8.2767
Icahn Master			03/12/08				7,314				8.3938
Icahn Master II			03/04/08				20,287				8.8221
Icahn Master II			03/05/08				14,600				8.6622
Icahn Master II			03/06/08				15,997				8.6558
Icahn Master II			03/07/08				22,213				8.4898
Icahn Master II			03/10/08				16,936				8.3880
Icahn Master II			03/11/08				13,884				8.2767
Icahn Master II			03/12/08				2,366				8.3938
Icahn Master III			03/04/08				8,468				8.8221
Icahn Master III			03/05/08				5,557				8.6622
Icahn Master III			03/06/08				5,991				8.6558
Icahn Master III			03/07/08				8,453				8.4898
Icahn Master III			03/10/08				6,447				8.3880
Icahn Master III			03/11/08				5,283				8.2767
Icahn Master III			03/12/08				900				8.3938
Icahn Partners			03/04/08				51,245				8.8221
Icahn Partners			03/05/08				39,872				8.6622
Icahn Partners			03/06/08				42,777				8.6558
Icahn Partners			03/07/08				60,660				8.4898
Icahn Partners			03/10/08				46,256				8.3880
Icahn Partners			03/11/08				37,912				8.2767
Icahn Partners			03/12/08				6,462				8.3938

Item 6. Contracts, Arrangements, Understandings or Relationship with Respect to Securities of the Issuer

     The Reporting Persons have entered into a number of derivative agreements, commonly known as Total Return Swaps, with counterparties, which agreements provide that the profit to the Reporting Persons shall be based upon the increase in value of the Shares and the loss to the Reporting Persons shall be based upon the decrease in the value of the Shares, during the period from inception of the applicable agreement to its termination. The agreements provide that they settle in cash. In addition to the Shares which they beneficially own as shown in Item 5 above, the Reporting Persons currently have long economic exposure to an aggregate of 3,552,897 Shares through such agreements. These agreements do not give the Reporting Persons direct or indirect voting, investment or dispositive control over the Shares to which these agreements relate and, accordingly, the Reporting Persons disclaim any beneficial ownership in the Shares to which these agreements relate.

     Except as otherwise described herein, there are no contracts, arrangements, understandings or relationships (legal or otherwise) among the persons named in Item 2 and between such persons and any person with respect to any securities of the Issuer, including but not limited to 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 loss, or the giving or withholding of proxies.

Item 7. Material to be Filed as Exhibits

1 Joint Filing Agreement of the Reporting Persons

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: March 14, 2008

HIGH RIVER LIMITED PARTNERSHIP
		By: Hopper Investments LLC, general partner
		By:		/s/ Edward Mattner
		Name: Edward Mattner
		Title: Authorized Signatory

ICAHN CAPITAL LP
		By: IPH GP LLC, its general partner
		By: Icahn Enterprises Holdings L.P., its sole member
		By: Icahn Enterprises G.P. Inc., its general partner
		By:		/s/ Andrew Skobe
		Name: Andrew Skobe
		Title: Chief Financial Officer

IPH GP LLC
		By: Icahn Enterprises Holdings L.P., its sole member
		By: Icahn Enterprises G.P. Inc., its general partner
		By:		/s/ Andrew Skobe
		Name: Andrew Skobe
		Title: Chief Financial Officer

ICAHN ENTERPRISES HOLDINGS L.P.
		By: Icahn Enterprises G.P. Inc., its general partner
		By:		/s/ Andrew Skobe
		Name: Andrew Skobe
		Title: Chief Financial Officer

EXHIBIT 1

JOINT FILING AGREEMENT

     In accordance with Rule 13d-1(k)(1) 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 Enzon 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 14th day of March, 2008.

HIGH RIVER LIMITED PARTNERSHIP
		By: Hopper Investments LLC, general partner
		By:		/s/ Edward Mattner
		Name:		Edward Mattner
		Title:		Authorized Signatory

ICAHN CAPITAL LP
		By: IPH GP LLC, its general partner
		By: Icahn Enterprises Holdings L.P., its sole member
		By: Icahn Enterprises G.P. Inc., its general partner
		By:		/s/ Andrew Skobe
		Name: Andrew Skobe
		Title: Chief Financial Officer

IPH GP LLC
		By: Icahn Enterprises Holdings L.P., its sole member
		By: Icahn Enterprises G.P. Inc., its general partner
		By:		/s/ Andrew Skobe
		Name: Andrew Skobe
		Title: Chief Financial Officer

ICAHN ENTERPRISES HOLDINGS L.P.
		By: Icahn Enterprises G.P. Inc., its general partner
		By:		/s/ Andrew Skobe
		Name: Andrew Skobe
		Title: Chief Financial Officer

SCHEDULE A

DIRECTORS AND EXECUTIVE OFFICERS OF THE REPORTING PERSONS

     The following sets forth the name, position, and principal occupation of each director and executive officer of each of the Reporting Persons. 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 the Reporting Persons’ knowledge, except as set forth in this statement on Schedule 13D, none of the directors or executive officers of the Reporting Persons own any Shares.

HIGH RIVER LIMITED PARTNERSHIP

Name		Position
Hopper Investments LLC		General Partner

HOPPER INVESTMENTS LLC

Name		Position
Edward E. Mattner		Authorized Signatory

BARBERRY CORP.

Name		Position
Carl C. Icahn		Chairman of the Board; President
Jordan Bleznick		Vice President/Taxes
Edward E. Mattner		Vice President; Authorized Signatory
Gail Golden		Vice President; Authorized Signatory
Vincent J. Intrieri		Vice President; Authorized Signatory
Keith Cozza		Secretary; Treasurer
Irene March		Authorized Signatory

ICAHN PARTNERS MASTER FUND LP
ICAHN PARTNERS MASTER FUND II LP
ICAHN PARTNERS MASTER FUND III LP

Name		Position
Icahn Offshore LP		General Partner
Carl Icahn		Chief Executive Officer
Keith A. Meister		Managing Director
Vincent J. Intrieri		Managing Director
Rupal Doshi		Chief Operating Officer
Irene March		Chief Financial Officer

Name		Position
Edward E. Mattner		Authorized Signatory
Gail Golden		Authorized Signatory
Dana Witkin		Director of Investor Relations
Keith Cozza		Chief Compliance Officer
Anthony Canova		Controller

ICAHN PARTNERS LP

Name		Position
Icahn Onshore LP		General Partner
Carl Icahn		Chief Executive Officer
Keith A. Meister		Managing Director
Vincent J. Intrieri		Managing Director
Rupal Doshi		Chief Operating Officer
Irene March		Chief Financial Officer
Edward E. Mattner		Authorized Signatory
Gail Golden		Authorized Signatory
Dana Witkin		Director of Investor Relations
Keith Cozza		Chief Compliance Officer
Anthony Canova		Controller

ICAHN ONSHORE LP
ICAHN OFFSHORE LP

Name		Position
Icahn Capital LP		General Partner
Carl Icahn		Chief Executive Officer
Keith A. Meister		Managing Director
Vincent J. Intrieri		Managing Director
Rupal Doshi		Chief Operating Officer
Irene March		Chief Financial Officer
Edward E. Mattner		Authorized Signatory
Gail Golden		Authorized Signatory
Dana Witkin		Director of Investor Relations
Keith Cozza		Chief Compliance Officer
Anthony Canova		Controller

ICAHN CAPITAL LP

Name		Position
IPH GP LLC		General Partner

IPH GP LLC

Name		Position
Icahn Enterprises Holdings L.P.		Sole Member

ICAHN ENTERPRISES HOLDINGS L.P.

Name		Position
Icahn Enterprises G.P. Inc.		General Partner

ICAHN ENTERPRISES G.P. INC.

Name		Position
Carl C. Icahn		Chairman
Keith A. Meister		Vice Chairman; Principal Executive Officer
William A. Leidesdorf		Director
Jack G. Wasserman		Director
James L. Nelson		Director
Vincent J. Intrieri		Director
Peter K. Shea		President
Andrew Skobe		Interim Chief Financial Officer; Treasurer
John P. Saldarelli		Vice President; Secretary
Felicia P. Buebel		Assistant Secretary
Craig Petit		Vice President/Taxes

BECKTON CORP.

Name		Position
Carl C. Icahn		Chairman of the Board; President
Jordan Bleznick		Vice President/Taxes
Edward E. Mattner		Authorized Signatory
Keith Cozza		Secretary; Treasurer