2007 STOCK OPTION PLAN
                                       OF
                        TETRAGENEX PHARMACEUTICALS, INC.

1.          PURPOSES OF THE PLAN

            1.1.  The  purposes of the 2007 Stock  Option  Plan (the  "Plan") of
            Tetragenex  Pharmaceuticals,   Inc.,  a  Delaware  corporation  (the
            "Company"), are to:

            1.2.  Encourage  selected  employees,  directors and  consultants to
            improve operations and increase profits of the Company;

            1.3.  Encourage  selected  employees,  directors and  consultants to
            accept or continue employment or association with the Company or its
            Affiliates; and

            1.4.  Increase the  interest of selected  employees,  directors  and
            consultants in the Company's  welfare through  participation  in the
            growth in value of the common stock of the Company (the "Shares").

            1.5.  Options granted under this Plan  ("Options") may be "incentive
            stock  options"  ("ISOs")  intended to satisfy the  requirements  of
            Section 422 of the Internal  Revenue Code of 1986,  as amended,  and
            the regulations  thereunder (the "Code"),  or  "non-qualified  stock
            options" ("NQSOs").

2.          ELIGIBLE PERSONS

            2.1.  Every  person  who at the  date of grant  of an  Option  is an
            employee of the Company or of any  Affiliate  (as defined  below) of
            the Company is  eligible  to receive  NQSOs or ISOs under this Plan.
            Every  person  who  at the  date  of  grant  is a  consultant  to or
            non-employee  director of, the Company or any  Affiliate (as defined
            below) of the Company is eligible to receive  NQSOs under this Plan.
            The  term  "Affiliate"  as  used  in the  Plan  means  a  parent  or
            subsidiary  corporation  as  defined  in the  applicable  provisions
            (currently  Sections 424(e) and (f),  respectively) of the Code. The
            term  "employee"  includes an officer or director who is an employee
            of the Company. The term "consultant"  includes persons employed by,
            or otherwise affiliated with, a consultant.

3.          STOCK SUBJECT TO THIS PLAN; MAXIMUM NUMBER OF GRANTS

            Subject to the  provisions of Section  6.1.1 of the Plan,  the total
            number of Shares, which may be issued under Options granted pursuant
            to this Plan,  shall not exceed seven million  sixty eight  thousand
            four hundred and twenty (7,068,420)Shares. The Shares covered by the
            portion of any grant under the Plan which expires  unexercised shall
            become available again for grants under the Plan.

4.          ADMINISTRATION

            4.1. The Plan shall be administered by either the Board of Directors
            of the Company (the "Board") or by a committee (the  "Committee") to
            which  administration  of the Plan,  or of part of the Plan,  may be
            delegated by the Board (in either case,  the  "Administrator").  The
            Board shall appoint and remove members of such Committee, if any, in
            its discretion in accordance with  applicable  laws. If necessary in
            order to comply with Rule 16b-3 under the Exchange Act and



            Section  162(m) of the Code,  the  Committee  shall,  in the Board's
            discretion,  be comprised solely of "non-employee  directors" within
            the meaning of said Rule 16b-3 and  "outside  directors"  within the
            meaning   of   Section   162(m)   of   the   Code.   The   foregoing
            notwithstanding,  the  Administrator  may delegate  nondiscretionary
            administrative  duties to such  employees of the Company as it deems
            proper and the Board,  in its absolute  discretion,  may at any time
            and from time to time  exercise any and all rights and duties of the
            Administrator under the Plan.

            4.2. Subject to the other provisions of this Plan, the Administrator
            shall have the authority,  in its discretion:  (a) to grant Options;
            (b) to  determine  the fair  market  value of the Shares  subject to
            Options; (c) to determine the exercise price of Options granted; (d)
            to  determine  the persons to whom,  and the time or times at which,
            Options shall be granted,  and the number of shares  subject to each
            Option;  (e) to interpret  this Plan; (f) to prescribe,  amend,  and
            rescind  rules  and  regulations  relating  to  this  Plan;  (g)  to
            determine  the terms and  provisions of each Option  granted  (which
            need not be  identical),  including  but not limited to, the time or
            times at which Options shall be exercisable; (h) with the consent of
            the optionee,  to modify or amend any Option; (i) to defer (with the
            consent of the  optionee)  the exercise  date of any Option;  (j) to
            authorize  any  person  to  execute  on behalf  of the  Company  any
            instrument  evidencing  the grant of an Option;  and (k) to make all
            other   determinations   deemed   necessary  or  advisable  for  the
            administration   of  this  Plan.  The   Administrator  may  delegate
            nondiscretionary  administrative  duties  to such  employees  of the
            Company as it deems proper.

            4.3.  All   questions   of   interpretation,   implementation,   and
            application  of this Plan shall be determined by the  Administrator.
            Such determinations shall be final and binding on all persons.

5.          GRANTING OF OPTIONS; OPTION AGREEMENT

            5.1. No Options shall be granted under this Plan after 10 years from
            the date of adoption of this Plan by the Board.

            5.2.  Each  Option  shall be  evidenced  by a written  stock  option
            agreement,  in form satisfactory to the  Administrator,  executed by
            the Company and the person to whom such Option is granted.

            5.3. The stock option agreement shall specify whether each Option it
            evidences is an NQSO or an ISO.

            5.4.   Subject  to  Section   6.3.3  with   respect  to  ISOs,   the
            Administrator  may approve  the grant of Options  under this Plan to
            persons  who  are  expected  to  become   employees,   directors  or
            consultants  of the  Company,  but are not  employees,  directors or
            consultants at the date of approval,  and the date of approval shall
            be deemed to be the date of grant unless otherwise  specified by the
            Administrator.

6.          TERMS AND CONDITIONS OF OPTIONS

                        Each Option  granted under this Plan shall be subject to
            the terms and  conditions set forth in Section 6.1. NQSOs shall also
            be subject to the terms and conditions set forth in Section 6.2, but
            not those set forth in  Section  6.3.  ISOs shall also be subject to
            the terms and conditions set forth in Section 6.3, but not those set
            forth in Section 6.2.

            6.1.  Terms and  Conditions  to Which All Options Are  Subject.  All
            Options  granted  under this Plan shall be subject to the  following
            terms and conditions:



            6.1.1.  Changes in Capital  Structure.  Subject to Section 6.2.2, if
            the stock of the  Company  is  changed  by reason of a stock  split,
            reverse   stock  split,   stock   dividend,   or   recapitalization,
            combination or  reclassification,  appropriate  adjustments shall be
            made by the  Board in (a) the  number  and  class of shares of stock
            subject to this Plan and each  Option  outstanding  under this Plan,
            and (b) the exercise  price of each  outstanding  Option;  provided,
            however,  that the Company shall not be required to issue fractional
            shares as a result  of any such  adjustments.  Each such  adjustment
            shall be subject to approval by the Board in its sole discretion.

            6.1.2.  Corporate  Transactions.   In  the  event  of  the  proposed
            dissolution or liquidation of the Company,  the Administrator  shall
            notify each optionee at least 30 days prior to such proposed action.
            To the extent not previously  exercised,  all Options will terminate
            immediately  prior  to the  consummation  of such  proposed  action;
            provided,  however,  that the Administrator,  in the exercise of its
            sole  discretion,  may permit exercise of any Options prior to their
            termination, even if such Options were not otherwise exercisable. In
            the event of a merger or  consolidation  of the Company with or into
            another corporation or entity in which the Company does not survive,
            or in the event of a sale of all or substantially  all of the assets
            of the  Company in which the  shareholders  of the  Company  receive
            securities  of the  acquiring  entity or an affiliate  thereof,  all
            Options shall be assumed or equivalent  options shall be substituted
            by the  successor  corporation  (or  other  entity)  or a parent  or
            subsidiary  of  such  successor   corporation   (or  other  entity);
            provided,  however,  that if such successor does not agree to assume
            the  Options  or to  substitute  equivalent  options  therefor,  the
            Administrator,  in the exercise of its sole  discretion,  may permit
            the  exercise of any of the Options  prior to  consummation  of such
            event, even if such Options were not otherwise exercisable.

            6.1.3.  Time of Option  Exercise.  Subject to Section 5 and  Section
            6.3.4,  Options  granted  under this Plan shall be  exercisable  (a)
            immediately as of the effective  date of the stock option  agreement
            granting the Option,  or (b) in accordance with a schedule as may be
            set by the  Administrator  (each  such  date on such  schedule,  the
            "Vesting  Base  Date") and  specified  in the written  stock  option
            agreement  relating to such Option.  In any case, no Option shall be
            exercisable   until  a  written  stock  option   agreement  in  form
            satisfactory  to the  Company is  executed  by the  Company  and the
            optionee.

            6.1.4.  Option Grant Date. The date of grant of an Option under this
            Plan shall be the date as of which the  Administrator  approves  the
            grant.

            6.1.5.  Nontransferability of Option Rights. Except with the express
            written   approval  of  the   Administrator   which   approval   the
            Administrator  is authorized to give only with respect to NQSOs,  no
            Option  granted  under this Plan shall be  assignable  or  otherwise
            transferable  by the optionee except by will, by the laws of descent
            and  distribution  or  pursuant to a  qualified  domestic  relations
            order.  During  the  life  of  the  optionee,  an  Option  shall  be
            exercisable only by the optionee.

            6.1.6.  Payment. All options issued under this plan are deemed to be
            cashless.  Options may be exercised using the intrinsic value of the
            options.

                        (a) Subject to the discretion of the  Administrator  and
            the  terms  of the  stock  option  agreement  granting  the  Option,
            delivery by the optionee of Shares already owned by the optionee for
            all or part of the Option  price,  provided  the fair  market  value
            (determined  as set forth in Section  6.1.10) of such  Shares  being
            delivered is equal on the date of



            exercise  to the  Option  price,  or  such  portion  thereof  as the
            optionee is authorized to pay by delivery of such stock; and

                        (b)  Subject  to the  discretion  of the  Administrator,
            through the  surrender of Shares then  issuable upon exercise of the
            Option,  provided the fair market value  (determined as set forth in
            Section  6.1.10) of such  Shares is equal on the date of exercise to
            the  Option  price,  or such  portion  thereof  as the  optionee  is
            authorized to pay by surrender of such stock.

            6.1.7. Termination of Employment. All options issued under this plan
            are to be vested immediately unless stipulated otherwise by the plan
            administrators at the time of issuance.

            6.1.8.  Withholding and Employment Taxes. At the time of exercise of
            an Option and as a condition  thereto,  or at such other time as the
            amount of such obligations  becomes  determinable  (the "Tax Date"),
            the  optionee  shall  remit to the  Company  in cash all  applicable
            federal and state  withholding and employment taxes. Such obligation
            to remit may be satisfied, if authorized by the Administrator in its
            sole discretion, after considering any tax, accounting and financial
            consequences, by the optionee's (a) delivery of a promissory note in
            the  required  amount  on  such  terms  as the  Administrator  deems
            appropriate, (b) tendering to the Company previously owned Shares or
            other  securities  of the Company  with a fair market value equal to
            the  required  amount,  or (c)  agreeing to have Shares (with a fair
            market value equal to the required  amount)  which are acquired upon
            exercise of the Option withheld by the Company.

            6.1.9.  Other  Provisions.  Each Option  granted under this Plan may
            contain   such  other  terms,   provisions,   and   conditions   not
            inconsistent   with   this  Plan  as  may  be   determined   by  the
            Administrator,  and each ISO granted  under this Plan shall  include
            such  provisions  and  conditions  as are  necessary  to qualify the
            Option as an "incentive  stock option" within the meaning of Section
            422 of the Code.

            6.1.10.  Determination  of Value. For purposes of the Plan, the fair
            market value of Shares or other  securities  of the Company shall be
            determined as follows:

                        (a) Fair market value shall be the closing price of such
            stock on the date before the date the value is to be  determined  on
            the   principal   recognized   securities   exchange  or  recognized
            securities  market on which such stock is  reported,  but if selling
            prices are not  reported,  its fair  market  value shall be the mean
            between the high bid and low asked prices for such stock on the date
            before  the date the value is to be  determined  (or if there are no
            quoted prices for such date,  then for the last  preceding  business
            day on which there were quoted prices).

                        (b) In the  absence  of an  established  market  for the
            stock,  the fair market value  thereof  shall be  determined in good
            faith by the  Administrator,  with  reference to the  Company's  net
            worth,  prospective  earning power,  dividend-paying  capacity,  and
            other relevant factors,  including the goodwill of the Company,  the
            economic outlook in the Company's  industry,  the Company's position
            in the industry,  the Company's management,  and the values of stock
            of other corporations in the same or similar line of business.

            6.1.11  Option Term.  Subject to Section  6.3.4,  no Option shall be
            exercisable  more than 10 years  after  the date of  grant,  or such
            lesser period of time as is set forth in the stock option  agreement
            (the end of the maximum  exercise  period stated in the stock option
            agreement is referred to in this Plan as the "Expiration Date").




            6.2. Terms and  Conditions to Which Only NQSOs Are Subject.  Options
            granted  under  this Plan  which are  designated  as NQSOs  shall be
            subject to the following terms and conditions:

            6.2.1. Exercise Price.

                        (a)  Except  as  set  forth  in  Section  6.2.1(b),  the
            exercise  price of an NQSO  shall  be not less  than 85% of the fair
            market value  (determined in accordance  with Section 6.1.10) of the
            stock subject to the Option on the date of grant.

                        (b) To the extent required by applicable laws, rules and
            regulations,  the exercise price of a NQSO granted to any person who
            owns,  directly or by attribution under the Code (currently  Section
            424(d)),  stock  possessing  more  than  ten  percent  of the  total
            combined  voting  power of all classes of stock of the Company or of
            any  Affiliate  (a "Ten Percent  Shareholder")  shall in no event be
            less than 110% of the fair market value  (determined  in  accordance
            with Section  6.1.10) of the stock covered by the Option at the time
            the Option is granted.

            6.3.  Terms and  Conditions to Which Only ISOs Are Subject.  Options
            granted  under  this Plan  which  are  designated  as ISOs  shall be
            subject to the following terms and conditions:

            6.3.1. Exercise Price.

                        (a)  Except  as  set  forth  in  Section  6.3.1(b),  the
            exercise price of an ISO shall be determined in accordance  with the
            applicable provisions of the Code and shall in no event be less than
            the fair market value (determined in accordance with Section 6.1.10)
            of the  stock  covered  by the  Option  at the  time the  Option  is
            granted.

                        (b) The  exercise  price  of an ISO  granted  to any Ten
            Percent  Shareholder shall in no event be less than 110% of the fair
            market value  (determined in accordance  with Section 6.1.10) of the
            stock covered by the Option at the time the Option is granted.

            6.3.2. Disqualifying Dispositions.  If stock acquired by exercise of
            an  ISO  granted   pursuant  to  this  Plan  is  disposed  of  in  a
            "disqualifying disposition" within the meaning of Section 422 of the
            Code (a  disposition  within two years from the date of grant of the
            Option or within one year after the transfer  such stock on exercise
            of the  Option),  the  holder of the stock  immediately  before  the
            disposition shall promptly notify the Company in writing of the date
            and  terms  of  the   disposition   and  shall  provide  such  other
            information  regarding  the  Option as the  Company  may  reasonably
            require.

            6.3.3.  Grant  Date.  If  an  ISO  is  granted  in  anticipation  of
            employment  as provided in Section  5.1,  the Option shall be deemed
            granted,  without further approval,  on the date the grantee assumes
            the employment  relationship  forming the basis for such grant, and,
            in addition,  satisfies  all  requirements  of this Plan for Options
            granted on that date.

            6.3.4. Term.  Notwithstanding  Section 6.1.11, no ISO granted to any
            Ten Percent  Shareholder  shall be exercisable  more than five years
            after the date of grant.



7.          MANNER OF EXERCISE

            7.1. An optionee  wishing to exercise an Option  shall give  written
            notice to the  Company at its  principal  executive  office,  to the
            attention  of  the  officer  of  the  Company   designated   by  the
            Administrator,  accompanied  by  payment of the  exercise  price and
            withholding  taxes as provided in Sections 6.1.6 and 6.1.8. The date
            the  Company  receives  written  notice  of  an  exercise  hereunder
            accompanied  by payment of the exercise  price will be considered as
            the date such Option was exercised.

            7.2.  Promptly  after  receipt of written  notice of  exercise of an
            Option  and the  payments  called for by Section  7.1,  the  Company
            shall,  without  stock  issue or transfer  taxes to the  optionee or
            other  person  entitled  to  exercise  the  Option,  deliver  to the
            optionee or such other person a certificate or certificates  for the
            requisite  number  of  shares of stock.  An  optionee  or  permitted
            transferee  of  the  Option  shall  not  have  any  privileges  as a
            shareholder  with  respect  to any  shares of stock  covered  by the
            Option until the date of issuance (as  evidenced by the  appropriate
            entry on the  books of the  Company  or a duly  authorized  transfer
            agent) of such shares.

8.          EMPLOYMENT OR CONSULTING RELATIONSHIP

                        Nothing  in this Plan or any  Option  granted  hereunder
            shall interfere with or limit in any way the right of the Company or
            of any of its Affiliates to terminate any  optionee's  employment or
            consulting  at any time,  nor confer upon any  optionee any right to
            continue  in the employ of, or consult  with,  the Company or any of
            its Affiliates.

9.          CONDITIONS UPON ISSUANCE OF SHARES

                        Shares  shall not be issued  pursuant to the exercise of
            an Option  unless the  exercise of such Option and the  issuance and
            delivery  of such  shares  pursuant  thereto  shall  comply with all
            relevant  provisions  of law,  including,  without  limitation,  the
            Securities Act of 1933, as amended (the "Securities Act").

10.         NON-EXCLUSIVITY OF THE PLAN

                        The  adoption  of the Plan  shall  not be  construed  as
            creating any  limitations  on the power of the Company to adopt such
            other incentive  arrangements  as it may deem desirable,  including,
            without  limitation,  the granting of stock options other than under
            the Plan.

11.         AMENDMENTS TO PLAN

                        The  Board  may at any time  amend,  alter,  suspend  or
            discontinue  this  Plan.  Without  the  consent of an  optionee,  no
            amendment,  alteration,  suspension or discontinuance  may adversely
            affect  outstanding  Options  except to  conform  this Plan and ISOs
            granted under this Plan to the  requirements of federal or other tax
            laws relating to incentive stock options. No amendment,  alteration,
            suspension  or  discontinuance  shall require  shareholder  approval
            unless (a)  shareholder  approval is required to preserve  incentive
            stock option  treatment  for federal  income tax purposes or (b) the
            Board otherwise concludes that shareholder approval is advisable.

12.         EFFECTIVE DATE OF PLAN; TERMINATION

                        This Plan shall become  effective  upon  adoption by the
            Board; provided, however, that no Option shall be exercisable unless
            and until written  consent of the  shareholders  of the Company,  or
            approval of  shareholders  of the Company voting at a validly called
            shareholders'  meeting,  is  obtained  within  twelve  months  after
            adoption by the Board. If such shareholder  approval is not obtained
            within such time,  Options  granted  hereunder  shall be of the same
            force and effect as if such  approval was  obtained  except that all
            ISOs  granted  hereunder  shall be treated as NQSOs.  Options may be
            granted  and  exercised  under this Plan only  after  there has been
            compliance with all applicable  federal and state  securities  laws.
            This Plan  shall  terminate  within  ten years  from the date of its
            adoption by the Board.