[GRAPHIC OMITTED]                                          FOR IMMEDIATE RELEASE
================================================================================


                                         Contact:         Craig Tooman
                                                          EVP, Finance and Chief
                                                          Financial Officer
                                                          908-541-8777



                    ENZON REPORTS THIRD QUARTER 2006 RESULTS
                     -- TURNAROUND MAKES VISIBLE PROGRESS --


BRIDGEWATER, NJ - November 2, 2006 - Enzon Pharmaceuticals,  Inc. (Nasdaq: ENZN)
today  announced  its financial  results for the third quarter of 2006.  For the
three months ended September 30, 2006, Enzon reported net income of $2.2 million
or $0.05 per diluted share, as compared to a net loss of $5.8 million or $(0.13)
per diluted share.

"We are pleased to report another solid quarter,  but more  importantly,  we are
enthusiastic  about the  Company's  momentum  toward  rebuilding  the  pipeline,
maximizing our current brands and recruiting top talent to lead the organization
in achieving the next level of success," said Jeffrey H. Buchalter, chairman and
chief  executive  officer of Enzon.  "Over the past  year,  we have been able to
leverage and modernize  the  Company's  core asset,  PEGylation  technology,  by
integrating  it with novel  oncology  candidates,  setting  the stage for a new,
innovative pipeline from the Company."

COMPANY UPDATES:
- -    The  Company's  rhMBL  program  expands with the approval of an  additional
     Investigational  New Drug (IND)  application  for use in the prevention and
     treatment  of  severe  infections  in  patients  with  low  levels  of  MBL
     undergoing liver transplant treatment.
- -    The Company's Santaris Pharma A/S  collaboration,  which was established in
     July of this year,  is on track and the Company  anticipates  filing an IND
     for the HIF-1 alpha antagonist by the end of 2006.
- -    The Company expects to have data presented at upcoming medical  conferences
     on three of its research and development  projects.  These include:  rhMBL,
     recombinant  human Manose  Binding Lectin for  immuno-suppressed  patients,
     Oncaspar(R),  a PEG-enhanced version of a naturally occurring enzyme called
     L-asparaginase,  and  PEG-SN38,  a PEGylated  form of the active  moiety of
     CPT-11 or Camptosar(R).




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                                       -2-

FINANCIAL RESULTS

REVENUES
The following  table reflects the revenues  generated by product and segment for
each of the three-month periods ended September 30, 2006 and 2005.



                         


                                                               Three Months Ended
                                         ----------------------------------------------------------------
                                                                 (in thousands)
                                         ----------------------------------------------------------------
                                                  September 30,          September 30,
                                                           2006                   2005          % Change
                                         ----------------------- ----------------------- ----------------
Products
  Oncaspar                                               $7,418                  $5,789              28%
  Depocyt                                                 2,000                   2,334            (14%)
  Abelcet                                                 8,986                  11,113            (19%)
  Adagen                                                  6,891                   5,940              16%
                                         ----------------------- ----------------------- ----------------
TOTAL PRODUCTS                                           25,295                  25,176             n.m.

ROYALTIES                                                18,705                  15,478              21%
CONTRACT MANUFACTURING                                    1,856                   3,393            (45%)

                                         ----------------------- ----------------------- ----------------
TOTAL REVENUES                                         $ 45,856                $ 44,047               4%
                                         ======================= ======================= ================




PRODUCTS  SEGMENT
Sales  from  the  products  segment,   comprised  of  Oncaspar(R),   Depocyt(R),
Abelcet(R),  and  Adagen(R),  increased  slightly to $25.3 million for the three
months ended  September 30, 2006,  from $25.2 million for the three months ended
September 30, 2005.

Sales of Oncaspar  grew to $7.4 million or 28 percent for the three months ended
September  30,  2006,  as compared to $5.8  million for the three  months  ended
September  30,  2005.  The growth of  Oncaspar  is mainly  attributable  to its
adoption in certain  protocols by hospitals and cooperative  groups. On July 25,
2006,  the  Company  announced  the  approval  of  Oncaspar  for the first  line
treatment of acute lymphoblastic leukemia (ALL).

Sales of Depocyt, a sustained-release  formulation of the chemotherapeutic agent
cytarabine   arabinoside  or  ara-C  used  for  the  treatment  of  lymphomatous
meningitis,  decreased  to $2.0 million or 14 percent for the three months ended
September  30,  2006,  as compared to $2.3  million for the three  months  ended
September 30, 2005.

Sales  of  Abelcet  in the U.S.  and  Canada,  a lipid  complex  formulation  of
amphotericin  B used  primarily  in the  hospital  to  treat  immuno-compromised
patients with invasive fungal  infections,  for the three months ended September
30, 2006 were $9.0 million, down 19 percent as compared to $11.1 million for the
three months ended  September 30, 2005. The decrease was primarily the result of
expected  competition  from  current  and  newly  launched  therapeutics  in the
anti-fungal market.

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                                       -3-

Sales of Adagen, an enzyme replacement therapy used to treat adenosine deaminase
(ADA)  deficiency in patients with severe  combined  immuno-deficiency  disease,
increased 16 percent to $6.9 million for the three  months ended  September  30,
2006, as compared to $6.0 million for the three months ended September 30, 2005.
This  market  has  a  very  small  number  of  patients  so   quarter-to-quarter
variability is not uncommon.

ROYALTIES SEGMENT
Revenues  from the  Company's  Royalties  segment  for the  three  months  ended
September  30, 2006 were $18.7  million,  as  compared to $15.4  million for the
three months ended  September 30, 2005, an increase of 21 percent.  Royalties on
PEG-INTRON,  marketed by  Schering-Plough,  continue to comprise the majority of
our royalty revenue. Schering-Plough has recently indicated that they anticipate
a decline in PEG-INTRON sales in Japan as new patient  enrollment  moderates and
competition increases.

CONTRACT MANUFACTURING SEGMENT
The Company's revenues from its Contract Manufacturing segment were $1.9 million
for the three months ended  September  30, 2006,  as compared to $3.4 million in
the corresponding period of the prior year. This includes contract manufacturing
revenues  related to services  the Company  provides for  customers  who require
injectable products,  such as Abelcet for markets outside of Canada and the U.S.
During the quarter,  the revenue  reconciliation for two contract  manufacturing
products  resulted  in a  reduction  of revenue of $1.2  million.  The timing of
production  of  another  product  Enzon  manufactures  also  resulted  in  lower
revenues.

RESEARCH AND DEVELOPMENT
The Company's research and development expenses were $10.6 million for the three
months  ended  September  30,  2006,  as compared to $5.3  million for the three
months ended September 30, 2005. The increase was  attributable to initiation of
programs in 2006.  Research and  development  expenses last year was impacted by
the  restructuring  that  occurred  in the  second  quarter  of  2005.  Enzon is
committed to investing in research and  development to build a leading  oncology
business through the continued development of its current portfolio, reinforcing
its position as a scientific leader in PEGylation  through its Customized Linker
Technology(TM)   platforms  and  strategic  in-licensing  of  innovative  cancer
programs, as demonstrated by the Company's strategic collaboration with Santaris
reported last quarter.

SELLING, GENERAL AND ADMINISTRATIVE
Selling,  general and administrative expenses increased to $14.3 million for the
three months ended  September  30,  2006,  as compared to $11.7  million for the
three months ended  September 30, 2005. The increase is mainly  attributable  to
the costs associated with the Company's debt refinancing completed this quarter.
The Company will continue to invest in selling, marketing, and other initiatives
to further its objective of delivering long-term value,  including improving its
top-line performance by investing in its commercial operations.

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                                       -4-


AMORTIZATION OF ACQUIRED INTANGIBLE ASSETS
Amortization  expense  decreased by $3.1 million to $184  thousand for the three
months ended eptember 30, 2006, as compared to $3.3 million for the three months
ended  September  30, 2005.  The decrease is a result of the Abelcet  intangible
write-down which occurred in December 2005.

ACQUIRED IN-PROCESS RESEARCH AND DEVELOPMENT
In August  2006,  we paid $8.0  million  for  worldwide  rights to  develop  and
commercialize  certain RNA  antagonists.  During the third quarter of last year,
the Company  paid $10.0  million for the rights to the clinical  development  of
recombinant human Mannose-Binding Lectin.

OTHER INCOME (EXPENSE)
Net other income (expense) is comprised of investment income,  interest expense,
and  other  non-operating   expenses.  The  Company  reported  other  income  of
approximately  $1.8 million for the three months ended  September  30, 2006,  as
compared to other expense of nearly $6.3 million in the same period in the prior
year. In July 2006, the Company  completed its debt  refinancing by repurchasing
$137.6  million of the 4.5% notes due in 2008,  which resulted in a gain of $4.8
million.  This gain was offset by the  write-off  of $1.2  million  in  deferred
offering costs associated with the 2008 convertible notes repurchased.  In 2005,
the  Company  reported  a loss of $3.5  million  related  to the  maturing  of a
financial instrument the Company formed to reduce its investment risk associated
with 1.5 million shares of NPS Pharmaceuticals, Inc. (NPS) common stock received
in June 2003.

INCOME TAXES
For the three months ended September 30, 2006, the Company  recognized a nominal
amount of state and Canadian tax liabilities.  For 2006, the estimated effective
annual U.S.  income tax rate is nominal due to the Company's  projected  taxable
income and availability of net operating loss carryforwards.

CASH AND INVESTMENTS
Total  cash  reserves,   which  include  cash,  cash   equivalents,   short-term
investments and marketable  securities,  were $240.4 million as of September 30,
2006, as compared to $226.6 million as of December 31, 2005.  Positive operating
cash flows for the nine-month  period ended September 30, 2006 and cash proceeds
from the sale of  Nektar  common  stock the  Company  owned  contributed  to the
increase in cash.  Offsetting  these cash  inflows  was the  January  payment to
Sanofi-Aventis  of $35.0 million relating to a reduction of the Oncaspar royalty
rate.




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                                       -5-

RECONCILIATION OF GAAP NET INCOME (LOSS) TO ADJUSTED NET INCOME (LOSS)
For the three months ended  September 30, 2006,  Enzon  reported an adjusted net
loss of $1.3  million or $(0.03) per diluted  share,  as compared to an adjusted
net loss of $2.3 million or $(0.05) per diluted share for the three months ended
September 30, 2005.

The following  table  reconciles  the Company's net income (loss) and net income
(loss)  per  diluted  share as  determined  in  accordance  with U.S.  generally
accepted accounting  principles (GAAP) to its adjusted net loss and adjusted net
loss per diluted share for the three months ended September 30, 2006 and 2005:


                         


                                                                        Three Months Ended
                                                             (in thousands, except per-share amounts)
                                                   --------------------------------------------------------------
                                                         September 30, 2006                September 30, 2005
                                                   ------------------------------    ----------------------------
                                                                         Net
                                                                       income                             Net
                                                           Net       (loss) per                        loss per
                                                         income       diluted            Net            diluted
                                                         (loss)        share            Loss             share
                                                   --------------- --------------    ------------- --------------
GAAP net income (loss)                                 $ 2,238       $ 0.05           $ (5,766)        $ (0.13)
Net adjustments to GAAP:
- -        Net realized gain related to the               (3,569)       (0.08)
         repurchase of debt (1)
- -        Net realized loss related to the sale               -         -                 3,460            0.08
         of NPS common stock (2)

                                                   --------------- --------------    ------------- --------------
Adjusted net loss (3)                                 $ (1,331)     $ (0.03)          $ (2,306)        $ (0.05)
                                                   --------------- --------------    ------------- --------------




(1)  The  Company's  adjusted  financial  results for the third  quarter of 2006
     exclude a gain  related to the  repurchase  of the 4.5% Notes at a price of
     $965 (plus  accrued  interest)  for each $1,000  principal  amount of notes
     tendered, offset by a write-off of related debt offering costs.
(2)  The Company's  adjusted financial results for the September quarter of 2005
     exclude a net-of-tax  realized loss of $3.5 million related to the maturing
     of a financial  instrument the Company formed to reduce its investment risk
     associated  with 1.5  million  shares of NPS  Pharmaceuticals,  Inc.  (NPS)
     common stock received in June 2003.  The Company  received the common stock
     under a merger termination agreement with NPS.
(3)  Adjusted net loss and adjusted net loss per diluted  share,  as the Company
     defines  them,  may differ  from  similarly  named  measures  used by other
     entities,  and  consequently,  could  be  misleading  unless  all  entities
     calculated and defined such items in the same manner.  The Company believes
     that investors'  understanding of its performance is enhanced by disclosing
     adjusted net income (loss) and adjusted net income (loss) per diluted share
     reflecting  adjustments  for  certain  items that the  Company  deems to be
     non-recurring.






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                                       -6-

CONFERENCE CALL AND WEBCAST
Enzon will be hosting a conference  call November 2, 2006 at 9:00am  E.S.T.  All
interested parties may access the call by using the following information:

            Domestic Dial-In Number:                (866) 585-6398
            International Dial-In Number:           (416) 849-9626
            Access Code:                            Enzon

Enzon's  conference  call will also be webcast  in a "listen  only" mode via the
Internet at  http://www.vcall.com.  Additionally,  for those  parties  unable to
listen at the time of Enzon's  conference call, a telephone  rebroadcast will be
available  following the call from November 2, 2006, at approximately 12:00 p.m.
E.S.T.  This rebroadcast  will end on November 9, 2006, at  approximately  11:59
p.m. E.S.T. The rebroadcast may be accessed using the following information:

            Domestic Dial-In Number:                (866) 245-6755
            International Dial-In Number:           (416) 915-1035
            Access Code:                            80421

ABOUT ENZON
Enzon  Pharmaceuticals,  Inc. is a  biopharmaceutical  company  dedicated to the
development and  commercialization of therapeutics to treat patients with cancer
and adjacent  diseases.  Enzon's  specialized  sales force  markets  Abelcet(R),
Oncaspar(R), Adagen(R), and Depocyt (R) in the United States. In addition, Enzon
also receives  royalties on sales of PEG-INTRON(R),  marketed by Schering-Plough
Corporation,  and MACUGEN(R),  marketed by OSI  Pharmaceuticals  and Pfizer Inc.
Enzon's  product-driven  strategy includes an extensive drug development program
that  leverages  its  proprietary  technologies,  including a Customized  Linker
TechnologyTM  PEGylation  platform that utilizes  customized linkers designed to
release  compounds at a controlled rate. Enzon complements its internal research
and  development  efforts  with  strategic  initiatives,  such  as  partnerships
designed  to  broaden  its  revenue  base or  provide  access to  promising  new
technologies or product development  opportunities.  The Company also engages in
contract   manufacturing   opportunities  with  third  parties  to  improve  its
efficiency.  Further information about Enzon and this press release can be found
on the Company's web site at www.enzon.com.

There are forward-looking  statements  contained herein, which can be identified
by  the  use of  forward-looking  terminology  such  as  the  words  "believes,"
"expects,"  "may,"  "will,"  "should",  "potential,"  "anticipates,"  "plans" or
"intends" and similar expressions. Such forward-looking statements involve known
and  unknown  risks,  uncertainties  and other  factors  that may  cause  actual
results,  events or  developments  to be  materially  different  from the future
results,  events or developments  indicated in such forward-looking  statements.
Such  factors  include,  but are not limited to the timing,  success and cost of
clinical studies; the ability to obtain regulatory approval of products,  market
acceptance of, and  continuing  demand for,  Enzon's  products and the impact of
competitive  products and pricing. A more detailed discussion of these and other
factors  that could  affect  results is  contained  in our filings with the U.S.
Securities and Exchange Commission, including our transition report on Form 10-K
for the six-month  period ended  December 31, 2005 and our quarterly  reports on
Form  10-Q.  These  factors  should be  considered  carefully  and  readers  are
cautioned not to place undue  reliance on such  forward-looking  statements.  No
assurance can be given that the future  results  covered by the  forward-looking
statements will be achieved.  All information in this press release is as of the
date of this press release and Enzon does not intend to update this information.

                        (Financial information to follow)




                                       -7-

                  Enzon Pharmaceuticals, Inc. and Subsidiaries
                      Consolidated Statements of Operations
                 THREE MONTHS ended September 30, 2006 and 2005
                      (In thousands, except per share data)
                                   (Unaudited)



                         

                                                                                     September 30,              September 30,
                                                                                         2006                        2005
                                                                              ------------------------    ----------------------

Revenues:
  Product sales, net                                                                         $ 25,295                   $ 25,176
  Royalties                                                                                    18,705                     15,478
  Contract manufacturing                                                                        1,856                      3,393
                                                                                      ----------------          ----------------
    Total revenues                                                                             45,856                     44,047
                                                                                      ----------------          ----------------

Costs and expenses:
  Cost of product sales and contract manufacturing                                             12,141                     11,964
  Research and development                                                                     10,599                      5,319
  Selling, general and administrative                                                          14,299                     11,697
  Amortization of acquired intangible assets                                                      184                      3,348
  Acquired in-process research and development                                                  8,000                     10,000
                                                                                      ----------------          ----------------
     Total costs and expenses                                                                  45,223                     42,328
                                                                                      ----------------          ----------------

Operating income                                                                                  633                      1,719
                                                                                      ----------------          ----------------

Other income (expense):
  Investment income, net                                                                        2,831                      1,632
  Interest expense                                                                            (5,912)                    (4,946)
  Other, net                                                                                    4,813                    (3,059)
                                                                                      ----------------          ----------------
                                                                                                1,732                    (6,373)
                                                                                      ----------------          ----------------
Income (loss) before income tax provision                                                       2,365                    (4,654)
Income tax provision                                                                              127                      1,112
                                                                                      ----------------          ----------------
Net income (loss)                                                                             $ 2,238                  $ (5,766)
                                                                                      ================          ================

Earnings (loss) per common share - basic                                                       $ 0.05                   $ (0.13)
                                                                                      ================          ================
Earnings (loss) per common share - diluted                                                     $ 0.05                   $ (0.13)
                                                                                      ================          ================
Weighted average shares - basic                                                                43,590                     43,486
                                                                                      ================          ================
Weighted average shares - diluted                                                              43,590                     43,486
                                                                                      ================          ================






                                     -more-






                                       -8-

                  Enzon Pharmaceuticals, Inc. and Subsidiaries
                      Condensed Consolidated Balance Sheets
                    September 30, 2006 and December 31, 2005
                                 (In thousands)
                                   (Unaudited)


                         


                                                                September 30,        December 31
                                                                    2006                 2005
                                                             -------------------- ------------------

Assets
Current assets:
  Cash and short-term investments                                      $ 169,985          $ 164,518
  Accounts receivable, net                                                11,798             14,087
  Inventories                                                             18,381             16,014
  Other current assets                                                     6,211             12,596
                                                             -------------------- ------------------
     Total current assets                                                206,375            207,215
                                                             -------------------- ------------------
Property and equipment, net                                               37,576             34,978
                                                             -------------------- ------------------
Other assets:
  Marketable securities                                                   70,458             62,059
  Amortizable intangible assets, net                                      63,093             34,154
  Other long-term assets                                                   6,873              2,939
                                                             -------------------- ------------------
                                                                         140,424             99,152
                                                             -------------------- ------------------
     Total assets                                                      $ 384,375          $ 341,345
                                                             ==================== ==================

Liabilities and Stockholders' Deficit
Current and other liabilities                                            $31,087            $31,315
Notes payable                                                            397,642            394,000
Stockholders' deficit                                                   (44,354)           (83,970)
                                                             -------------------- ------------------
     Total liabilities and stockholders' deficit                       $ 384,375          $ 341,345
                                                             ==================== ==================

Common shares outstanding                                                 43,877             43,787
                                                             ==================== ==================



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