EQUITY SOURCE PARTNERS, LLC
                           575 Jericho Tpke; Suite 102
                                Jericho, NY 11753

                                                                 August 16, 2007
Martin Schacker
Chairman of the Board
Tetragenex Pharmaceuticals, Inc.
1 Maynard Drive, Suite 205
Park Ridge, NJ 07656

Dear Martin:

Equity Source Partners, LLC ("ESP") is pleased to act as the exclusive placement
agent for Tetragenex (the  "Company") in connection  with your proposed  capital
transaction. The terms of our engagement are set forth below. We look forward to
working with you.

     I.   THE  OFFERING.  We  understand  you wish to  raise up to five  million
          dollars  ($5,000,000)  through a private  placement of certain equity,
          equity-linked  or  debt  securities   solely  to   Institutional   and
          Accredited  Investors (the  "Offering").  The Offering will be made in
          accordance  with the exemption from the  registration  requirements of
          the Securities Act of 1933, as amended,  and the rules and regulations
          promulgated   thereunder   (collectively,   the  "Act")   provided  by
          Regulation D under the Act "Regulation D") and the  qualification  and
          registration  requirements of applicable state and foreign  securities
          or blue sky laws and  regulations.  You  understand  that ESP will use
          reasonable  efforts with respect to the  marketing of the Offering and
          that  the  actual  terms  of  the  Offering   will  depend  on  market
          conditions,  and will be  subject  to due  diligence  and  negotiation
          between the Company and prospective investors.

     2.   FEES AND EXPENSES.

          Concurrently  with any closing of any  Offering  during the Term,  the
          Company will pay ESP the following:

          (a) A cash fee equal to 8% of the  gross  proceeds  received  from the
          sale of securities.

          (b) Reimbursement of $25,000 of non-accountable  expenses inclusive of
          legal fees to be incurred by ESP in connection with the Offering.

          (c) 5 year warrants to purchase a number of  securities  sold equal to
          8% of the gross  number of shares sold at each  closing (or the number
          of shares of common stock the securities are  convertible  into in the
          event  convertible  debt is sold). The warrants shall contain the same
          provisions (including strike price (or the initial conversion price in
          the case of convertible debt  securities),  anti-dilution  protections
          and  registration  rights)  afforded to the investors in the Offering,
          along with a cashless exercise provision.






Martin Schacker,
Chairman of the Board
August 16, 2007
Page 2

     3.   TERM; TAIL RIGHTS; RIGHT OF FIRST REFUSAL.

          (a)  The term of this  agreement  ("Term")  shall commence on the date
               hereof and shall  continue for an initial term of two (2) months;
               provided, however, either party may terminate this agreement upon
               10 days  written  notice to the other  party based on a breach of
               the other party's  obligations  hereunder and provided,  however,
               that no such termination  shall be effective unless the breaching
               party is  provided  with  written  notice  of such  breach  and a
               reasonable time period to cure such breach. Upon termination, ESP
               will be  entitled  to  receive  any fees  accruing  prior to such
               termination  (based only on securities  actually placed and sold)
               and post termination  (i.e., the "tail" provisions as provided in
               Section  3(b) and 3(c) below) and  reasonable  expenses  actually
               incurred  through  the  date  of  termination,   subject  to  the
               limitation in Section 2(b) hereof.  In addition,  upon expiration
               or termination of this  Agreement,  it is understood that Section
               6. - Indemnification,  Section 7. - Governing Law and Section 12.
               - Miscellaneous shall survive.

          (b)  If during the twelve months  following  termination or expiration
               of this agreement,  any person which we introduced to the Company
               during the Term (an "ESP Introduced Party") purchases  securities
               from the  Company  other  than  through  an  underwritten  public
               offering (or enters into an agreement during the Term to purchase
               securities  from the  Company  which is  consummated  at  anytime
               thereafter),  the Company  shall pay ESP upon the receipt of such
               funds, a cash fee and warrants in the amount that would otherwise
               have been payable to ESP had such transaction occurred during the
               Term in accordance with section 2.

          (c)  In the event any ESP Introduced Party invests in the Offering and
               then makes a  subsequent  investment  (including  the exercise of
               warrants  attached to this  transaction)  in the Company within a
               thirty (36) month period  following its initial  investment,  the
               Company  agrees to pay ESP upon the  closing  of such  subsequent
               investment  a cash fee and  warrants  in the  amount  that  would
               otherwise have been payable to ESP had such transaction  occurred
               during the Term in accordance with section 2.

          (d)  Upon a closing of the  Offering  in which  gross  proceeds  of at
               least $1 million is raised,  the Company  will grant ESP a twelve
               (12) month right of first refusal to act as lead placement  agent
               on any future private placement of the Company's  securities.  It
               is understood  that if a third party  broker-dealer  provides the
               Company  with  written  terms with  respect  to a future  private
               securities offering ("Written Offering Terms"), the Company shall
               promptly  present same to ESP.  ESP shall have ten (10)  business
               days from its receipt of the Written  Offering  Terms in which to
               determine  whether  or not  to  accept  such  offer  and,  if ESP
               refuses, and provided that such financing is consummated (a) with
               another  placement  agent upon  substantially  the same terms and
               conditions  as the Written  Offering  Terms and (b) within  three
               months  after  the end of the  aforesaid  ten (10)  business  day
               period, this right of first refusal shall thereafter be forfeited
               and  terminated;  PROVIDED,  HOWEVER,  IF  the  financing  is not
               consummated  under the  conditions  of clauses (a) and (b) above,
               then the right of first  refusal  shall once again be  reinstated
               under the same terms and conditions set forth in this paragraph.






Martin Schacker,
Chairman of the Board
August 16, 2007
Page 3

     4.   REPRESENTATIONS, WARRANTIES AND COVENANTS.

          (a)  The Company  will  cooperate  with and will  furnish ESP with all
               reasonable  information  and data  concerning the Company and the
               Offering  which ESP deem  appropriate  (all such  information  so
               furnished  being the  "Information")  and will  provide  ESP with
               reasonable  access  to  the  Company's  officers,  directors  and
               employees.  The Company  represents  that all Information and any
               disclosure  materials made available to ESP for  distribution  to
               investors  will be complete and correct in all material  respects
               and will not contain  any untrue  statement  of 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. The Company will advise ESP
               immediately  of the  occurrence  of any event or any other change
               known to the Company which results in the Information  containing
               an untrue  statement  of a material  fact or  omitting to state a
               material fact required to be stated  therein or necessary to make
               the  statements  therein  or  previously  made,  in  light of the
               circumstance  under  which they were made,  not  misleading.  The
               Company  further  represents  and warrants that to the extent any
               projections  are  furnished,  such  projections  will  have  been
               prepared in good faith and will be based upon assumptions, which,
               in light of the  circumstances  under  which  they are made,  are
               reasonable.

               ESP   agrees  to  keep  all   Information   confidential   except
               Information  that (i) is or becomes  generally  available  to the
               public (other than as a result of a disclosure by ESP),  (ii) was
               available  to ESP or its  representatives  on a  non-confidential
               basis  prior to its  disclosure  by the  Company,  (iii)  becomes
               available  to ESP or its  representatives  on a  non-confidential
               basis from a person other than the Company who, to the  knowledge
               of ESP,  is not  bound by a  confidentiality  agreement  with the
               Company,  or (iv) ESP or any of its  representatives is requested
               pursuant  to, or required by law,  regulation,  legal  process or
               regulatory  authority to disclose.  The  obligations of ESP under
               the  immediately  preceding  sentence  shall  terminate  upon the
               second anniversary of this letter agreement.

          (b)  You understand  and agree that ESP's  obligations to commence the
               Private  Placement  may be subject to  execution  of a  Placement
               Agency  Agreement  on  customary  terms  and   incorporating  the
               principal  terms hereof In the absence of such  Placement  Agency
               Agreement, you agree that we may rely upon, and are a third party
               beneficiary  of,  the   representations   and   warranties,   and
               applicable  covenants,  set forth in any stock purchase agreement
               or subscription  agreement that you execute with investors in the
               Offering.  If requested by ESP, the Company  will, at the closing
               of the Offering,  furnish ESP with the same favorable  opinion of
               its outside  counsel as is furnished to the investors,  addressed
               to ESP or together  with a letter from such  counsel that ESP may
               rely on its opinion as if directed  to ESP. In  addition,  at the
               closing of the  Offering,  the Company  will provide ESP with the
               same certificates of the officers of the Company as are furnished
               to the  investors  and such  other  certification,  opinions  and
               documents as ESP or its counsel may deem appropriate, in form and
               substance  satisfactory  to ESP and its  counsel,  including  any
               updates of the Company's representations and warranties set forth
               herein.  Lastly, upon the reasonable  determination by ESP that a
               NASD Rule 2710 filing is required in






Martin Schacker,
Chairman of the Board
August 16, 2007
Page 4

               connection with the registration statement relating to the resale
               of the securities sold in the Offering,  the Company will pay all
               filing fees,  costs and reasonable  legal fees in connection with
               such  filing to be  prepared  by ESP's  counsel  (up to $7,500 of
               legal fees)

          (c)  You also agree to provide us with due  diligence  materials as we
               request or copies of due diligence  materials  which are provided
               to investors in the Offering.

     5.   NO CONFLICT.

          The Company  represents,  warrants and agrees,  as of the date hereof,
          that:  (i) neither the execution and delivery of this Agreement by the
          Company nor the consummation of the transactions  contemplated  hereby
          will, directly or indirectly,  with or without the giving of notice or
          lapse of time, or both, (A) violate any provisions of the  Certificate
          of  Incorporation  or By-laws of the Company or (B) violate,  or be in
          conflict  with, or constitute a default under,  any agreement,  lease,
          mortgage,  debt or  obligation  of the Company or require the payment,
          any pre-payment or., other penalty with respect  thereto;  (ii) it has
          all  requisite  power and  authority  to enter  into and  perform  its
          obligations  under this Agreement;  (iii) this Agreement has been duly
          executed and delivered and constitutes  valid and binding  obligations
          of the Company,  enforceable  against the Company in  accordance  with
          their  respective  terms;  and (iv) it has not engaged the services of
          any  other  broker,  agent,  advisor  or  finder  in  connection  with
          corporate finance or investment banking services.

     6.   INDEMNIFICATION.

          The Company and ESP agree to the indemnification  provisions set forth
          on Annex A. Said indemnification shall apply regardless of whether the
          proposed offering is consummated.

     7.   GOVERNING LAW.

          This agreement  shall be governed by and construed in accordance  with
          the laws of the state of New York applicable to contracts executed and
          to be wholly performed  therein without giving effect to its conflicts
          of laws  principles  of rules.  This  letter  constitutes  the  entire
          understanding of the parties with respect to the subject matter hereof
          and may not be  altered or  amended  except in writing  signed by both
          parties.  This  Agreement  shall  be  deemed  to have  been  made  and
          delivered  in New York  City and  shall be  governed  as to  validity,
          interpretation,  construction, affect and in all other respects by the
          internal  laws of the State of New York.  The  Company (1) agrees that
          any legal  suit,  action or  proceeding  arising out of or relating to
          this letter shall be instituted  exclusively in New York State Supreme
          Court,  County of New York, or in the United States District Court for
          the Southern  District of New York, (2) waives any objection which the
          Company  may  have now or  hereafter  to the  venue of any such  suit,
          action or proceeding, and (3) irrevocably consents to the jurisdiction
          of the New York  State  Supreme  Court,  County of New  York,  and the
          United States District Court for the Southern  District of New York in
          any such suit,  action or  proceeding.  The Company  further agrees to
          accept and  acknowledge  service of any and all  process  which may be
          served in any such suit,  action or  proceeding  in the New York State
          Supreme  Court,  County of New York, or in the United States  District
          Court for the Southern District of New York and both parties agree






Martin Schacker,
Chairman of the Board
August 16, 2007
Page 5

          that service and process may be performed in any manner  prescribed by
          New York law in any suit  action or  proceeding.  THE  PARTIES  HERETO
          AGREE TO WAIVE THEIR RESPECTIVE RIGHTS TO A JURY TRIAL OF ANY CLAIM OR
          CAUSE OF ACTION  BASED UPON OR ARISING  OUT OF THIS  AGREEMENT  OR ANY
          DOCUMENT OR AGREEMENT CONTEMPLATED HEREBY.

     8.   ANNOUNCEMENT OF OFFERING.

          If the  Offering  is  consummated,  ESP  may at  its  expense,  and in
          accordance  with any  applicable  NASD and SEC  regulations,  place an
          announcement in such newspapers and periodicals as ESP may desire. The
          Company  reserves the right to review and comment and  pre-approve any
          announcement that ESP intends to publish with respect to any financing
          contemplated here under that clause.

     9.   ADVICE TO THE BOARD.

          The Company acknowledges that any advice given by ESP to you is solely
          for the benefit and use of the Board of  Directors  of the Company and
          may not be used,  reproduced,  disseminated,  quoted or  referred  to,
          without our prior written consent, except as may be required by law or
          in connection with any action or proceeding under paragraph 7.

     10.  CONFLICTING ENGAGEMENTS.

          Nothing in this letter  shall be construed to limit the ability of ESP
          or its  affiliates  to  pursue,  investigate,  analyze,  invest in, or
          engage in investment banking, financial advisory or any other business
          relationship  with  entities  other than the Company,  notwithstanding
          that such entities may be engaged in a business which is similar to or
          competitive with the business of the Company, and notwithstanding that
          such  entities  may have  actual or  potential  operations,  products,
          services,  plans, ideas, customers or supplies similar or identical to
          the Company's, or may have been identified by the Company as potential
          merger or acquisition  targets or potential  candidates for some other
          business combination, cooperation or relationship.

     11.  INDEPENDENT CONTRACTOR.

          In carrying out its  responsibilities  under this letter, ESP shall be
          an independent  contractor with complete  supervision and control over
          its own activities,  and shall have no right or authority to assume or
          create any obligation on behalf of the Company.

     12.  MISCELLANEOUS.

          The  parties  acknowledge  and agree  that  With  respect  to  phrases
          contained herein such as "as a results of our efforts," "introduced to
          the Company by ESP" or similar language,  such phrases are intended to
          include  any  person  or  entity,  introduced  to the  Company  by the
          undersigned. Thus, to the extent that the Company consummates any part
          of the Offering with any person or entity,  whose  introduction to the
          Company  can be traced  back to a person or entity who was  originally
          introduced to the Company by ESP or are persons or entities with which
          ESP had otherwise had discussions or  negotiations  during the Term on
          behalf of the Company,  ESP is entitled to the compensation  described
          herein.






Martin Schacker,
Chairman of the Board
August 16, 2007
Page 6

          This Agreement  constitutes  the entire  understanding  of the parties
          with  respect to the subject  matter  hereof and may not be altered or
          amended except in a writing signed by both parties.

          During the Term and the applicable tail periods referred to herein the
          Company  shall not  negotiate,  enter into or attempt to  negotiate or
          enter into any agreement, covenant or understanding,  written or oral,
          with any other person or entity, directly or indirectly, that could in
          any manner be  construed  to be  inconsistent  with this  agreement or
          could  undermine any of the rights or interests of ESP in, under or in
          respect  of  this   Agreement  and  agrees  not  to  interfere   with,
          circumvent,   frustrate  or   otherwise   impede  in  any  manner  the
          realization  by ESP of any of the  objectives  it  seeks  or  benefits
          derived, or to be derived, from any of the foregoing.

          The execution of this  Agreement  does not  constitute a commitment by
          ESP  or  the  Company  to  consummate  any  transaction   contemplated
          hereunder and does not ensure the  successful  placement of securities
          of the  Company or the  success of ESP with  respect to  securing  any
          financing on behalf of the Company. The Company's engagement of ESP is
          not  intended  to confer  rights  upon any person  not a party  hereto
          (including shareholders,  directors,  officers,  agents, employees, or
          creditors of the Company) as against ESP or its  affiliates,  or their
          respective  directors,  officers,  employees or agents,  successors or
          assigns.  ESP's  engagement  by the Company is not  intended to confer
          rights  upon any person not a party  hereto  (including  shareholders,
          directors,  officers,  agents, employees, or creditors of the Company)
          as  against  the  Company  or  its  affiliates,  or  their  respective
          directors,  officers,  employees or agents,  successors or assigns. No
          promises or  representations  have been made except as  expressly  set
          forth  in this  agreement  and the  parties  have  not  relied  on any
          promises  or  representations  except as  expressly  set forth in this
          agreement.  Nothing  contained  herein should be construed as creating
          any fiduciary duties between the parties.

          In the event that other  services  are  required  and/or  transactions
          which are the  result of ESP's  efforts  that are not as  contemplated
          herein,  the parties hereto shall negotiate in good faith to determine
          a mutually acceptable level of compensation in such an eventuality.

          The rights and  obligations  of either party under this  Agreement may
          not be assigned or delegated by such party  without the prior  written
          consent of the other party (except by operation of law), and any other
          purported  assignment  or  delegation  shall  be null and  void.  This
          Agreement  shall be  binding  upon and  inure  to the  benefit  of the
          parties and their respective  permitted successors and assigns. If any
          provision  of  this   Agreement  is   determined   to  be  invalid  or
          unenforceable in any respect,  then such determination will not affect
          such  provision  in any other  respect or any other  provision of this
          Agreement,  which will  remain in full force and  effect.  No material
          provision  of this  agreement  shall be  deemed  waived  and no breach
          excused, unless such waiver or consent excusing the breach shall be in
          writing  and  signed by the party to be  charged  with such  waiver or
          consent.

          The Company  represents,  warrants and agrees,  as of the date hereof,
          that:  (i) neither the execution and delivery of this Agreement by the
          Company nor the consummation of the transactions  contemplated  hereby
          will, directly or indirectly, with or without the giving of






Martin Schacker,
Chairman of the Board
August 16, 2007
Page 7

          Notice or lapse of time or both,  (A)  violate  any  provision  of the
          Certificate of Incorporation or By-laws of the Company or (B) violate,
          or be in conflict with, or constitute a default under,  any agreement,
          lease,  mortgage,  debt or  obligation  of the  Company or require the
          payment,  any pre-payment or other penalty with respect thereto;  (ii)
          it has all requisite power and authority to enter into and perform its
          obligations  under this Agreement;  (iii) this Agreement has been duly
          executed and delivered and constitutes  valid and binding  obligations
          of the Company,  enforceable  against the Company in  accordance  with
          their  respective  terms;  and (iv) it has not engaged the services of
          any  other  broker,  agent,  advisor  or  finder  in  connection  with
          corporate finance or investment banking services.

 We look  forward to working with you and  developing  a long-term  relationship
 with the Company.

                                                   Very truly yours,
                                                   Equity Source Partners, LLC

                                                   By: /s/ Harvey Kohn
                                                   -----------------------------
                                                   Harvey Kohn
                                                   Authorized Signatory

 Confirmed and accepted as of
 The 21st day of August, 2007

 Tetragenex Pharmaceuticals, Inc.

 By:   /s/ Martin Schacker
       --------------------------------------
       Name: Martin Schacker
       Title: Chairman of the Board








Martin Schacker
Chairman of the Board
August 16, 2007
Page 8
                                     ANNEX A
                                 INDEMNIFICATION

     The Company  agrees to indemnify and hold  harmless ESP and its  affiliates
and their  respective  officers,  directors,  employees,  agents and controlling
persons  (ESP and each  such  person  being an  "Indemnified  Party"),  from and
against any losses, claims, damages and liabilities,  joint or several, to which
such  Indemnified  Party  may  become  subject  under  any  applicable  law,  or
otherwise,  which  relate  to or arise  in any  manner  out of any  transaction,
financing, or any other matter (collectively, the "Matters") contemplated by the
engagement  letter of which this Annex A forms a part and the performance by ESP
of  the  services   contemplated  thereby,  and  will  promptly  reimburse  each
Indemnified  Party for all reasonable  expenses  (including  reasonable fees and
expenses of legal counsel) as incurred in connection with the  investigation of,
preparation  for or defense of any pending or threatened  claim or any action or
proceeding arising  therefrom,  whether or not such Indemnified Party is a party
and whether or not such claim,  action or  proceeding is initiated or brought by
or on behalf of the Company.  Notwithstanding  the foregoing,  the Company shall
not be liable under the  foregoing to the extent that any loss,  claim,  damage,
liability  or  expense  is found  in a final  judgment  by a court of  competent
jurisdiction to have resulted solely from ESP's bad faith or gross negligence.

     The Company also agrees that no Indemnified  Party shall have any liability
(whether direct or indirect, in contract or tort or otherwise) to the Company or
its security  holders or creditors  related to, arising out of, or in connection
with, any Matters,  the engagement of ESP pursuant to, or the performance by ESP
of the services contemplated by, the engagement letter, except to the extent any
loss,  claim,  damage,  liability  if  found in a final  judgment  by a court of
competent  jurisdiction  to have  resulted  solely from ESP's bad faith or gross
negligence.

     If the  indemnification  of an  Indemnified  Party provided for this letter
agreement is for any reason held unenforceable, although otherwise applicable in
accordance  with its terms,  the  Company  agrees to  contribute  to the losses,
claims,   damages  and  liabilities  for  which  such  indemnification  is  held
unenforceable  (i) in such  proportion as is appropriate to reflect the relative
benefits to the  Company,  on the one hand,  and ESP, on the other hand,  of any
Matter  (whether or not the Matter is  consummated) or (ii) if (but only if) the
allocation provided for in clause (i) is for any reason held  unenforceable,  in
such  proportion  as is  appropriate  to reflect not only the relative  benefits
referred to in clause (i) but also the relative fault of the Company, on the one
hand,  and ESP,  on the  other  hand,  as well as any other  relevant  equitable
considerations.  The Company  agrees that for the purposes of this paragraph the
relative benefits to the Company and ESP of any contemplated  Matter (whether or
not such  Matter is  consummated)  shall be deemed to be in the same  proportion
that the total  value paid or  received or to be paid or received by the Company
as a result of or in connection with any Matter, bears to the fees paid or to be
paid to ESP under the engagement letter; provided, however,- that, to the extent
permitted  by  applicable  law,  in no event  shall the  Indemnified  Parties be
required to  contribute  an  aggregate  amount in excess of the  aggregate  fees
actually  paid to ESP under the  engagement  letter of which  this  Annex A is a
part.

     The Company agrees that it will not,  without the prior written  consent of
ESP,  settle,  compromise or consent to the entry of any judgment in any pending
or threatened  claim,  action or proceeding in respect of which  indemnification
may be sought hereunder (whether or not ESP or any other Indemnified Party is an
actual or  potential  party to such claim,  action or  proceeding),  unless such
settlement,  compromise or consent includes an unconditional  release of ESP and
each






Martin Schacker,
Chairman of the Board
August 16, 2007
Page 9


other  Indemnified Party hereunder from all liability arising out of such claim,
action or proceeding.

     If ESP or any other Indemnified Party is requested or required to appear as
a witness in any action  brought  by or on behalf of or against  the  Company in
which such party is not named as a defendant, the Company will reimburse ESP for
all reasonable  expenses  incurred in connection with such party's appearing and
preparing to appear as such a witness,  including,  without limitation, the fees
and disbursements of its legal counsel.

     The  provisions of this Annex A shall continue to apply and shall remain in
full force and effect  regardless  of any  modification  or  termination  of the
engagement  or  engagement  letter  of  which  this  Annex  A is a  part  or the
completion of ESP's services there under.