[SUNRISE SECURITIES CORP. LOGO]
                         -------------------------------
                                Member NASD/SiPC

                                                                   EXHIBIT 10(s)

                              DR. AMNON MANDELBAUM
                                MANAGING DIRECTOR
                               INVESTMENT BANKING

                TELEPHONE (212) 421-1616 FACSIMILE (212) 750-7277


Dr. Geoffrey Shulman, President & CEO
DUSA Pharmaceuticals, Inc.
25 Upton Drive
Wilmington, MA  01887

                          INVESTMENT BANKING AGREEMENT


Dear Geoff:

This  agreement  ("Agreement")  is made and entered into this February 27, 2004,
between SUNRISE  SECURITIES  CORP.  ("Sunrise") and DUSA  PHARMACEUTICALS,  INC.
(together with all  subsidiaries,  affiliates,  successors and other  controlled
units, either existing or formed subsequent to the execution of this engagement,
the "Company").

           In  consideration  of the mutual  promises  made herein and for other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

1.    The Company  hereby  engages  Sunrise upon the terms and conditions as set
      forth herein as its exclusive  placement agent and investment  banker with
      respect to a Financing (as defined in 3(B) below) and related matters upon
      the terms  and  conditions  set  forth  herein.  In that  regard,  Sunrise
      understands that the Company seeks Financing from the sale of 2.25 million
      shares  of  common  stock  of the  Company  at  $11.00  per  share  and an
      additional  investment  right to  provide  the  investors  the  ability to
      purchase up to 337,500  additional  shares of common  stock of the Company
      (the "Offering"). It is acknowledged and agreed that any Financing is on a
      best efforts basis only. This Agreement  should not be construed as a firm
      commitment  or guarantee of any  Financing.  Sunrise and the Company agree
      and  acknowledge  that the decision to consummate a Financing  shall be in
      the Company's sole and absolute discretion.

2.    Except as otherwise  specified in Paragraph 6 hereof, this Agreement shall
      be effective for a period of one (1) month,  commencing upon the execution
      hereof and shall  terminate  thereafter  unless  extended  upon the mutual
      written agreement of the parties.

3.    During the term of this Agreement,  Sunrise shall provide the Company with
      such regular and customary consulting advice as is reasonably requested by
      the  Company,  provided  that  Sunrise  shall not be required to undertake
      duties  not  reasonably  within  the scope of the  financial  advisory  or
      investment  banking  services  contemplated  by  this  Agreement.   It  is
      understood  and  acknowledged  by the parties  that the value of Sunrise's
      advice is not readily quantifiable, and that Sunrise shall be obligated to
      render  advice upon the request of the Company,  in good faith,  but shall
      not be obligated to spend any specific amount of time in so doing.

4.    Sunrise shall render such other financial  advisory and investment  and/or
      investment  banking  services  as may from time to time be agreed  upon in
      writing by Sunrise and the Company.


                            SUNRISE SECURITIES CORP.
               641 LEXINGTON AVE., 25TH FLOOR, NEW YORK, NY 10022




5.    In  consideration  for the  services  rendered  by Sunrise to the  Company
      pursuant  to this  Agreement,  the  Company  shall  compensate  Sunrise as
      follows:

      A. At the Closing of the  Financing,  the  Company  shall issue to Sunrise
      and/or its  designees a  non-refundable  retainer  fee in the form of such
      number of shares of common stock of the Company  equal to one percent (1%)
      of the aggregate number of fully diluted and/or converted shares of common
      stock and/or  common stock  equivalents  as are purchased by Investors (as
      defined below) (the "Retainer Fee").

      B. Also, upon the Closing of Financing, the Company shall issue to Sunrise
      and/or its designees  such number of shares of common stock of the Company
      equal to five percent (5%) of the aggregate number of fully diluted and/or
      converted  shares of common stock and/or common stock  equivalents  as are
      purchased  by  Investors  (the  "Financing  Fee").  For  the  purposes  of
      Financing, Sunrise will enter into a selected dealer agreement dated as of
      February 27, 2004  ("Dealer  Agreement")  with Roth Capital and  Flagstone
      Securities Corp. (collectively,  the "Participating Dealers"). Sunrise and
      the  Company  agree that  pursuant  to the Dealer  Agreement  and upon the
      closing of the Financing,  Sunrise will pay the  Participating  Dealers at
      the  sole  election  of  Sunrise  either:  (i)  the  aggregate  amount  of
      US$200,000  in cash,  or (ii) such number of shares of common stock of the
      Company equal to US$200,000  calculated at the same purchase price paid by
      the Investors.  However, in any and all events, the Company agrees that if
      the Participating Dealers are entitled to receive more than US$200,000 (in
      cash or stock as described above), the Company shall accordingly  increase
      the  Financing  Fee payable to Sunrise to cover any such  additional  fees
      payable to the Participating  Dealers by Sunrise.  Convertible  securities
      shall be treated as equity for purposes of calculating  the Financing Fee.
      Securities   acquired  or   otherwise   received  by   financing   sources
      ("Investors")  are  referred  to as  "Securities."  In the event that this
      Agreement   shall  not  be  renewed  or  if  terminated  for  any  reason,
      notwithstanding  any such  non-renewal  or  termination,  Sunrise shall be
      entitled to a full fee as  provided  under  Paragraph  5 hereof,  upon the
      receipt of proceeds by the Company  from the sale of the  Securities.  For
      the  purposes  of this  Agreement,  the term  "Financing"  shall  mean the
      financing or equity investment in the Company,  or any combination thereof
      (i.e., where the funds are received by the Company, as distinct from funds
      received  by  selling   shareholders)described   above  as  the  Offering.
      Sunrise's  fee  shall be  based  upon the  percentages  set  forth in this
      Paragraph 5B above of the gross proceeds before any deductions,  including
      but  not  limited  to  fees,  deposits,  transaction  expenses,  reserves,
      insurance or other  amounts  withheld or paid by the  Investor.  Financing
      shall be deemed to include  total  value of  Securities  sold  directly or
      indirectly, in connection with the Financing,  including proceeds received
      by the Company upon exercise of the  Additional  Investment  Right Shares,
      and any amounts  paid into  escrow and any  amounts  payable in the future
      whether or not subject to any contingency.

6.    In  the  event  that  this  Agreement  shall  not be  renewed  or if it is
      terminated, without closing any Financing, for any reason, notwithstanding
      any such  non-renewal or termination,  Sunrise shall be entitled to a full
      fee as provided under any other Financing, for the Financing that includes
      the  participation  of any one or  more of the  parties  on the  List  (as
      defined below) which is consummated  within a period of twelve (12) months
      after such  non-renewal or termination of this Agreement.  The list (which
      list  shall  be  deemed  to  include  all  of  such  parties'   respective
      subsidiaries,  affiliates,  successors and other controlled units,  either
      existing  or  formed  subsequent  to  the  execution  of  this  Agreement,
      collectively,  the "List") of parties  which shall govern the operation of
      this Paragraph 6 is attached hereto and made a part hereof as Exhibit A.

7.    In addition to the fees  payable  hereunder,  and  regardless  whether any
      Financing set forth in Paragraph 6 hereof is proposed or consummated,  the
      Company shall reimburse  Sunrise for all reasonable fees and disbursements
      of  Sunrise's  outside  counsel for the  drafting and review of the Dealer
      Agreement not to exceed $5,000.00.


                            SUNRISE SECURITIES CORP.
               641 LEXINGTON AVE., 25TH FLOOR, NEW YORK, NY 10022


                                                                               2


8.    The Company  acknowledges  that all opinions and advice  (written or oral)
      given by Sunrise to the Company in connection  with  Sunrise's  engagement
      are intended  solely for the benefit and use of the Company in considering
      the transaction or financing to which they relate,  and the Company agrees
      that no person or entity other than the Company  shall be entitled to make
      use of or rely upon the advice of Sunrise  to be given  hereunder,  and no
      such opinion or advice shall be used for any other purpose or  reproduced,
      disseminated,  quoted or referred to at any time, in any manner or for any
      purpose, nor may the Company make any public references to Sunrise, or use
      Sunrise's  name in any annual  reports or any other reports or releases of
      the Company without  Sunrise's prior written  consent,  which shall not be
      unreasonably withheld.

9.    The  Company  acknowledges  that  Sunrise  and its  affiliates  are in the
      business of providing  financial services and consulting advice to others.
      Nothing herein  contained shall be construed to limit or restrict  Sunrise
      in conducting  such business with respect to others,  or in rendering such
      advice to others,  except as such advice may relate to matters relating to
      the Company's business and properties.

10.   The Company  recognizes  and confirms that, in advising the Company and in
      fulfilling  its engagement  hereunder,  Sunrise will use and rely on data,
      material and other  information  furnished to Sunrise by the Company.  The
      Company acknowledges and agrees that in performing its services under this
      engagement, Sunrise may rely upon the data, material and other information
      supplied by the Company  without  independently  verifying  its  accuracy,
      completeness  or  veracity,  except  to  the  extent  Sunrise  has  actual
      knowledge to the contrary.  The Company represents and warrants to Sunrise
      that all such  information  concerning the Company provided by the Company
      in  response to requests  made by Sunrise or  otherwise,  will be true and
      accurate  in all  material  respects  and  will  not  contain  any  untrue
      statement of a material fact or omit to state a material fact necessary in
      order  to make  the  statements  therein  not  misleading  in light of the
      circumstances under which such statements are made. Sunrise shall be under
      no  obligations  to  make  an  independent   appraisal  of  assets  or  an
      investigation  or  inquiry  as  to  any  information  regarding,   or  any
      representations  of, any other participant in a Financing,  and shall have
      no liability with regard thereto. The Company acknowledges and agrees that
      Sunrise  will be using and relying upon such  information  supplied by the
      Company  and its  officers,  agents  and  others  and any  other  publicly
      available  information  concerning  the Company  without  any  independent
      investigation or verification thereof or independent  appraisal by Sunrise
      of the Company or its business or assets.  If, in Sunrise's  opinion after
      completion  of its due  diligence  process,  the condition of the Company,
      financial  or  otherwise,  and  its  prospects  are not  substantially  as
      represented or do not fulfill Sunrise's  expectations,  Sunrise shall have
      the sole  discretion to review and  determine  its  continued  interest in
      proposed  Financings.  The Company further represents and agrees that: (i)
      the  Company is not  obligated  to pay any finder in  connection  with any
      proposed  Financing  pursuant to this Agreement and, in any and all events
      that any parties other than Sunrise or the Participating Dealers set forth
      in Paragraph 5B above ("Other Parties") seek compensation  relating to the
      closing of any proposed  Financing,  Sunrise  shall be entitled to receive
      its full  compensation from the Company as set forth in this Agreement and
      that Sunrise shall have no obligation whatsoever to pay any Other Parties,
      (ii) the Company shall deliver at the closing of each Financing  conducted
      hereunder: (a) a certificate of each of the Company's President and CFO to
      the effect that the Company's  information  provided to the Investors does
      not contain  any untrue  statement  of material  fact or fail to state any
      material  fact  required  to be stated  therein or  necessary  to make the
      statements therein not misleading,  and all necessary  corporate approvals
      have been  obtained  to enable the Company to deliver  the  Securities  in
      accordance  with the terms of the  Financing,  and (b) a 10b-5  opinion of
      counsel  for the  Company  satisfactory  to Sunrise to the effect that the
      Company's  information  provided to the  Investors  does not (except  with
      respect to the  financial  statements  or forecasts as to which no opinion
      need be expressed)  contain any untrue  statement of material fact or fail
      to state any material fact  required to be stated  therein or necessary to
      make the statements therein not misleading,  in light of the circumstances
      in which  they were  made,  and such  other  opinions  as  Sunrise  and/or
      Sunrise's counsel shall reasonably  require,  (iii) as of the date hereof,
      there is no  litigation  pending or involving  the business or property of
      the  Company  except  as  disclosed  in the  Company's  filings  with  the
      Securities  and  Exchange  Commission  ("SEC"),  (iv) the Company  owns or
      possesses free of all encumbrances its assets,  trademarks,  patents,  and
      copyrights  necessary  to conduct its  business  except for the  Company's
      Citizens Bank loan as disclosed in the Company's filings with the SEC, (v)
      all taxes which are due and payable by the Company  have been paid in full
      and the Company has no tax  deficiency or claims  outstanding  or proposed
      against it, (vi) the  financial  statements of the Company as of September
      30, 2003,  present the  financial  position as of the date hereof and such
      financial  statements  have been  prepared in  accordance  with  generally
      accepted accounting principals,  and (vii) all "blue sky" legal work shall
      be performed by the Company's counsel at the Company's sole expense.

                            SUNRISE SECURITIES CORP.
               641 LEXINGTON AVE., 25TH FLOOR, NEW YORK, NY 10022


                                                                               3



11.   Since Sunrise will be acting on behalf of the Company in  connection  with
      its  engagement  hereunder,  the Company and Sunrise  have  entered into a
      separate  indemnification  agreement  substantially  in the form  attached
      hereto  as  Schedule  A and  dated  the  date  hereof,  providing  for the
      indemnification  of Sunrise by the Company.  Sunrise has entered into this
      Agreement in reliance on the indemnities set forth in such indemnification
      agreement.

12.   Sunrise shall perform its services hereunder as an independent  contractor
      and not as an  employee  of the  Company or an  affiliate  thereof.  It is
      expressly  understood  and agreed to by the parties  hereto  that  Sunrise
      shall have no authority  to act for,  represent or bind the Company or any
      affiliate  thereof in any manner,  except as may be agreed to expressly by
      the Company in writing from time to time.

13.   Sunrise  hereby  waives its right to receive any shares of Common Stock of
      the Company with respect to any  Effectiveness  Failure,  Filing  Failure,
      Maintenance  Failure or AIR  Exercisability  Failure under Section 2.f. of
      the Registration Rights Agreement.

14.   A. This Agreement and the Schedule A attached hereto constitute the entire
      agreement and  understanding of the parties hereto,  and supersede any and
      all  previous  agreements  and  understandings,  whether  oral or written,
      between the parties with respect to the matters set forth herein.

      B. Any notice or communication permitted or required hereunder shall be in
      writing and shall be deemed  sufficiently  given if hand-delivered or sent
      (i) postage prepaid by registered mail, return receipt requested,  or (ii)
      by facsimile  to the  respective  parties as set forth  below,  or to such
      other address as either party may notify the other of in writing:


if to the Company, to:            DUSA PHARMACEUTICALS, INC.
                                  25 Upton Drive
                                  Wilmington, MA  01887

                                  Attn: Dr. Geoffrey Shulman, President & CEO


if to Sunrise, to:                SUNRISE SECURITIES CORP.
                                  641 Lexington Ave., 25th Floor
                                  New York, New York  10022
                                  Attn: Dr. Amnon Mandelbaum, Managing Director


                            SUNRISE SECURITIES CORP.
               641 LEXINGTON AVE., 25TH FLOOR, NEW YORK, NY 10022


                                                                               4


      C. This  Agreement  shall be binding upon and inure to the benefit of each
      of  the   parties   hereto   and  their   respective   successors,   legal
      representatives and assigns.

      D. This Agreement may be executed in any number of  counterparts,  each of
      which together shall constitute one and the same original  document.  This
      Agreement  may be executed and  delivered by exchange of facsimile  copies
      showing the parties' signatures,  and those signatures need not be affixed
      to the same copy.  The  facsimile  copies  showing the  signatures  of the
      parties will  constitute  originally  signed copies of the same  Agreement
      requiring no further execution.

      E. No  provision  of this  Agreement  may be amended,  modified or waived,
      except in a writing signed by all of the parties hereto.

      F. This  Agreement  shall be construed in accordance  with and governed by
      the laws of the State of New York,  without  giving effect to its conflict
      of law  principles.  The parties  hereby agree that any dispute  which may
      arise  between them arising out of or in  connection  with this  Agreement
      shall be  adjudicated  before a court  located in New York City,  and they
      hereby submit to the exclusive  jurisdiction of the courts of the State of
      New York  located in New York,  New York and of the federal  courts in the
      Southern  District  of New  York  with  respect  to any  action  or  legal
      proceeding  commenced by any party,  and  irrevocably  waive any objection
      they now or hereafter may have  respecting the venue of any such action or
      proceeding  brought in such a court or respecting the fact that such court
      is an  inconvenient  forum,  relating to or arising out of this Agreement,
      and  consent  to the  service  of  process  in any  such  action  or legal
      proceeding  by means of  registered  or  certified  mail,  return  receipt
      requested, in care of the address set forth in Paragraph 13B hereof.

      The  parties  hereby  waive  trial  by jury in any  action  or  proceeding
      involving, directly or indirectly, any matter in any way arising out of or
      in connection with this Agreement.

      Please  note  that  capitalized   terms  not  otherwise  defined  in  this
      Investment   Banking  Letter  shall  have  the  meanings  defined  in  the
      Securities   Purchase   Agreement,   Registration   Rights  Agreement  and
      Additional   Investment  Right  Agreement  between  the  Company  and  the
      Investors.

      If the foregoing  correctly sets forth the  understanding  between Sunrise
      and the Company with  respect to the  foregoing,  please so indicate  your
      agreement  by  signing  in the place  provided  below,  at which time this
      letter shall become a binding contract.


                               SUNRISE SECURITIES CORP.
                               By Its Authorized Signatory:

                               By:/s/ Nathan Low
                                  -----------------------------
                                   Nathan Low, President


                            SUNRISE SECURITIES CORP.
               641 LEXINGTON AVE., 25TH FLOOR, NEW YORK, NY 10022


                                       5



Accepted and Agreed:

DUSA PHARMACEUTICALS, INC.
By Its Authorized Signatory:

By:/s/ D. Geoffrey Shulman
   --------------------------------------------
Name:  D. Geoffrey Shulman
Title:  President and Chief Executive Officer



                            SUNRISE SECURITIES CORP.
               641 LEXINGTON AVE., 25TH FLOOR, NEW YORK, NY 10022



                                       6




                                Member NASD/SiPC

                                   SCHEDULE A
                           INDEMNIFICATION PROVISIONS
- --------------------------------------------------------------------------------

In connection  with the engagement of SUNRISE  SECURITIES  CORP.  ("Sunrise") by
DUSA PHARMACEUTICALS,  INC. (the "Company") pursuant to a letter agreement dated
February __, 2004 between the Company and Sunrise as it may be amended from time
to time (the "Letter Agreement"), the Company, hereby agrees as follows:

1.    In  connection  with or arising out of or relating  to the  engagement  of
      Sunrise  under the Letter  Agreement,  or any  actions  taken or  omitted,
      services  performed or matters  contemplated  by or in connection with the
      Letter Agreement,  the Company agrees to reimburse Sunrise, its affiliates
      and  their  respective   directors,   officers,   employees,   agents  and
      controlling persons (each an "Indemnified Party") promptly upon demand for
      actual, out-of-pocket expenses (including reasonable fees and expenses for
      legal counsel) as they are incurred in connection  with the  investigation
      of,  preparation for or defense of any pending or threatened claim, or any
      litigation, proceeding or other action in respect thereof (collectively, a
      "Claim").  The Company also agrees (in  connection  with the foregoing) to
      indemnify and hold harmless  each  Indemnified  Party from and against any
      and all out-of-pocket losses,  claims,  damages and liabilities,  joint or
      several, to which any Indemnified Party may become subject,  including any
      amount paid in settlement of any litigation or other action  (commenced or
      threatened)  to which the Company  shall have  consented in writing  (such
      consent not to be unreasonably  withheld),  whether or not any Indemnified
      Party is a party and whether or not liability resulted; provided, however,
      that the Company shall not be liable  pursuant to this sentence in respect
      of any loss,  claim,  damage or  liability  to the extent  that a court or
      other agency having competent  jurisdiction shall have determined by final
      judgement (not subject to further appeal) that such loss, claim, damage or
      liability was incurred solely as a direct result of the willful misconduct
      or gross negligence of such Indemnified Party.

2.    An  Indemnified  Party  shall  have the  right  to  retain  legal  counsel
      designated  by the Company to conduct the defense and all related  matters
      in connection  with any Claim.  The Company shall pay the reasonable  fees
      and expenses of such legal counsel,  and such counsel shall to the fullest
      extent, consistent with its professional responsibilities,  cooperate with
      the  Company.  At an  Indemnified  Party's sole  election,  in lieu of the
      Company's legal counsel, an Indemnified Party shall also have the right to
      retain separate legal counsel of its own choice to conduct the defense and
      all related  matters in connection  with any Claim.  The Company shall pay
      the reasonable  fees and expenses of such legal counsel,  and such counsel
      shall  to  the   fullest   extent,   consistent   with  its   professional
      responsibilities,  cooperate  with  the  Company  and  any  legal  counsel
      designated by the Company, provided,  however, that, the Company shall pay
      such fees and expenses of such legal  counsel only in the event that there
      is a  conflict  of  interest  with  representation  by the  legal  counsel
      designated by the Company for such Indemnified Party.

3.    The  Company  will  not,   without  the  prior  written  consent  of  each
      Indemnified  Party  settle,  compromise  or  consent  to the  entry of any
      judgement  in  any  pending  or  threatened  Claim  in  respect  of  which
      indemnification  may be reasonably  sought  hereunder  (whether or not any
      Indemnified Person is an actual or potential party to such Claim),  unless
      such  settlement,   compromise  or  consent  includes  an   unconditional,
      irrevocable release of each Indemnified Person against whom such Claim may
      be brought hereunder from any and all liability arising out of such Claim.

4.    In the event the  indemnity  provided for in  paragraphs 1 and 2 hereof is
      unavailable or insufficient to hold any Indemnified  Party harmless,  then
      the Company shall  contribute to amounts paid or payable by an Indemnified
      Party in respect of such Indemnified Party's losses,  claims,  damages and
      liabilities  as to which the indemnity  provided for in paragraphs 1 and 2
      hereof is unavailable or insufficient (i) in such portion as appropriately
      reflects the relative benefits  received by the Company,  on the one hand,
      and the  Indemnified  Party,  on the other hand,  in  connection  with the
      matters as to which losses, claims, damages or liabilities relate, or (ii)
      if the  allocation  provided by (i) above is not  permitted by  applicable
      law, in such  proportion as  appropriately  reflects not only the relative
      benefits  referred  to in clause  (i) but also the  relative  fault of the
      Company, on the one hand, and the Indemnified  Parties, on the other hand,
      as well as any other equitable considerations. The amounts paid or payable
      by a party in respect of losses,  claims, damages and liabilities referred
      to  above  shall  be  deemed  to  include  any  reasonable  legal or other
      out-of-pocket  fees and  expenses  incurred in defending  any  litigation,
      proceeding  or other  action  or  claim.  Notwithstanding  the  provisions
      hereof,  Sunrise's share of the liability hereunder shall not be in excess
      of the  amount of fees  actually  received  by  Sunrise  under the  Letter
      Agreement  (excluding any amounts received as reimbursement of expenses by
      Sunrise).


                            SUNRISE SECURITIES CORP.
               641 LEXINGTON AVE., 25TH FLOOR, NEW YORK, NY 10022





5.    It is understood and agreed that, in connection with Sunrise's  engagement
      by the Company under the Letter Agreement,  Sunrise may also be engaged to
      act for the  Company in one or more  additional  capacities,  and that the
      terms of any such  additional  engagement  may be  embodied in one or more
      separate written agreements.  These Indemnification Provisions shall apply
      to the engagement  under the Letter  Agreement and to any such  additional
      engagement and any modification of such additional  engagement;  provided,
      however,  that in the event that the Company  engages  Sunrise to act as a
      dealer  manager in an exchange  or tender  offer or as an  underwriter  in
      connection with the issuance of securities by the Company or to furnish an
      opinion  letter,  such  further  engagement  may be  subject  to  separate
      indemnification  and  contribution  provisions  as may be mutually  agreed
      upon.

6.    These Indemnification  Provisions shall remain in full force and effect in
      connection  with the  transaction  contemplated  by the  Letter  Agreement
      whether or not consummated, and shall survive the expiration of the period
      of the Letter  Agreement,  and shall be in addition to any liability  that
      the Company might otherwise have to any Indemnified Party under the Letter
      Agreement or otherwise.

7.    Each party hereto consents to personal jurisdiction and service of process
      and  venue in any  court in the  State of New York in which  any claim for
      indemnity is brought by any Indemnified Person.

8.    These  Indemnification  Provisions  may  be  executed  in  any  number  of
      counterparts,  each of which shall be deemed an original  but all of which
      when taken together shall  constitute one and the same  instrument.  These
      Indemnification  Provisions  may be delivered by facsimile,  and facsimile
      signatures  shall be treated as  original  signatures  for all  applicable
      purposes.


SUNRISE SECURITIES CORP.
By Its Authorized Signatory:

By: /s/ Nathan Low
   ---------------------------------
           Nathan Low, President

DUSA PHARMACEUTICALS, INC.
By Its Authorized Signatory:

By:  /s/ D. Geoffrey Shulman
   --------------------------------------------
Name:  D. Geoffrey Shulman
Title:  President and Chief Executive Officer


                            SUNRISE SECURITIES CORP.
               641 LEXINGTON AVE., 25TH FLOOR, NEW YORK, NY 10022


                                                                               2




                                    EXHIBIT A


Pursuant to Paragraph 6 of the Investment Banking Agreement ("Agreement") by and
between Sunrise  Securities  Corp.  ("Sunrise") and DUSA  Pharmaceuticals,  Inc.
(together with all  subsidiaries,  affiliates,  successors and other  controlled
units,  either existing or formed subsequent to the execution of this Exhibit A,
the "Company") dated as of February 27, 2004, for purposes of the Agreement, the
definition  of the parties  included on the "List" shall include any one or more
of  the  parties  set  forth  below  together  with  any  of  their   respective
subsidiaries and/or affiliates.

      1.    Omicron Master Trust

      2.    Langley Partners, L.P.

      3.    Mainfield Enterprises Inc.

      4.    Portside Growth and Opportunity Fund

      5.    Smithfield Fiduciary LLC

      6.    Cranshire Capital L.P.

      7.    Paul Scharfer

      8.    Sunrise Equity Partners, LP

      9.    Vertical Ventures, LLC

      10.   Sunrise Securities Corp.


SUNRISE SECURITIES CORP.                   DUSA PHARMACEUTICALS, INC.
By Its Authorized Signatory                By Its Authorized Signatory

By:/s/ Nathan Low                          By: /s/ D. Geoffrey Shulman
   ----------------------------               ----------------------------------
     Nathan Low, President                 Name: D. Geoffrey Shulman
                                           Title: President and Chief
                                                   Executive Officer


                            SUNRISE SECURITIES CORP.
               641 LEXINGTON AVE., 25TH FLOOR, NEW YORK, NY 10022


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