May 3, 2000


ConSyGen, Inc.
125 South 52nd Street
Suite 140
Tempe, AZ 85281

     Re: ConSyGen, Inc., a Texas corporation
         Registration Statement on Form S-8

Gentlemen:

          We  are  counsel  for  ConSyGen,   Inc.,  a  Texas   corporation  (the
"Company").  We have been asked to deliver this opinion in  connection  with the
preparation  and filing with the  Securities and Exchange  Commission  under the
Securities Act of 1933, as amended (the "Act"),  of a Registration  Statement on
Form S-8 (the  "Registration  Statement")  relating to an aggregate of 5,000,000
shares of the Company's Common Stock,  $.003 par value per share (the "Shares").
This opinion  letter,  together with Schedule A attached  hereto (this  "Opinion
Letter"),  is being rendered in connection  with the filing of the  Registration
Statement.

          The  5,000,000  Shares  covered  by  the  Registration  Statement  are
issuable  under the Company's  2000  Combination  Stock Option Plan (referred to
herein as the "Plan").

          In  connection  with this  Opinion  Letter,  we have  examined and are
familiar  with  originals or copies,  certified or otherwise  identified  to our
satisfaction, of the following documents (collectively, the "Documents"):

          1. a  certificate  from the  Secretary  of State of the State of Texas
dated March 28, 2000 as to the legal existence and good standing of the Company;

          2. a copy of the Articles of Incorporation of the Company,  as amended
to date,  and a  certificate  of the  Secretary  that there have been no further
amendments thereto;

          3.  a  copy  of the  Amended  and  Restated  By-laws  of the  Company,
certified by the Secretary of the Company as presently being in effect;

          4. certain proceedings of the directors of the Company relative to the
Plan and Options granted under the Plan;

          5. the Plan;

          6. a letter of recent date from the Company's transfer agent as to the
issued and outstanding shares of the Company's Common Stock, $.003 par value per
share;

          7. a  representation  letter dated April 12, 2000 from the Company and
Howard R. Baer  regarding  consulting  services  provided  to the Company by Mr.
Baer; and

          8. the Registration Statement.

          We have  assumed,  for the  purposes of our opinion  herein,  that any
conditions  to the  issuance  of the Shares  under the Plan have been or will be
satisfied in full.

          We  have,   without   independent   investigation,   relied  upon  the
representations and warranties of the various parties as to matters of objective
fact contained in the Documents.

          In addition, this Firm, in rendering legal opinions, customarily makes
certain  assumptions  which are described in Schedule A hereto. In the course of
our  representation  of the Company in connection  with the  preparation  of the
Registration  Statement,  nothing has come to our  attention  which causes us to
believe reliance upon any of these assumptions is inappropriate,  and, with your
concurrence,  the opinion hereafter  expressed is based upon those  assumptions.
The Enumerated Party referred to in Schedule A is the Company.

          We have not made any independent  review or  investigation  of orders,
judgments,  rules or other regulations or decrees by which the Company or any of
its property may be bound, nor have we made any independent  investigation as to
the existence of actions, suits,  investigations or proceedings, if any, pending
or threatened against the Company.

          With your concurrence, our opinion hereafter expressed is based solely
upon  (1) our  review  of the  Documents,  (2)  discussions  with  those  of our
attorneys  who have  devoted  substantive  attention to the  preparation  of the
Registration  Statement,  and (3) such review of published  sources of law as we
have deemed necessary.

          Our  opinions  contained  herein  are  limited  to  the  laws  of  the
Commonwealth  of  Massachusetts  and the  Federal  law of the  United  States of
America. To the extent that the Plan or any agreement issued thereunder provides
that it  should  be  governed  by the laws of any  jurisdiction  other  than the
Commonwealth  of  Massachusetts,  our  opinion  regarding  the  Shares  is being
rendered as if only the internal laws of the Commonwealth of Massachusetts  were
applicable  thereto,  notwithstanding  the governing law provisions of the Plan,
any agreement  issued  thereunder to the contrary or that the Company is a Texas
corporation.

          We express no legal opinion upon any matter other than that explicitly
addressed  below,  and  our  express  opinion  therein  contained  shall  not be
interpreted to be an implied opinion upon any other matter.

          Based upon and subject to the  foregoing,  we are of the opinion  that
the issuance of the Shares has been duly  authorized  and,  when issued and paid
for in accordance  with the terms and conditions of the Plan, the Shares will be
validly issued, fully paid, and non-assessable.

          We hereby  consent to the  reference to this firm in the  Registration
Statement  and to the filing of this  opinion  as Exhibit 5 to the  Registration
Statement.

                                         Very truly yours,

                                         BROWN, RUDNICK, FREED & GESMER, P.C.

                                         By: /s/ John G. Nossiff, Jr.
                                             -----------------------------------
                                             John G. Nossiff, Jr., a Member

JGN:SRL:MSG

                                   SCHEDULE A

                         BROWN, RUDNICK, FREED & GESMER
                              STANDARD ASSUMPTIONS


          In rendering  legal  opinions,  Brown,  Rudnick,  Freed & Gesmer makes
certain customary assumptions described below:

1.   Each natural  person  executing any of the Documents has  sufficient  legal
     capacity to enter into such Documents.

2.   Each  Document  is  accurate,  complete  and  authentic,  each  original is
     authentic,  each copy conforms to an authentic  original and all signatures
     are genuine.

3.   All official public records are accurate, complete and properly indexed and
     filed.

4.   There has not been any mutual mistake of fact or  misunderstanding,  fraud,
     duress, or undue influence by or among any of the parties to the Documents.

5.   The conduct of the parties to the  Documents  has  complied in the past and
     will comply in the future with any requirement of good faith,  fair dealing
     and conscionability.

6.   The  Enumerated  Party will obtain all permits and  governmental  approvals
     required in the future and take all actions similarly  required relevant to
     its performance of its obligations under the Documents.

7.   All parties to or bound by the Documents  will act in accordance  with, and
     will  refrain  from taking any action that is  forbidden  by, the terms and
     conditions of the Documents.

8.   There are no agreements or understandings  among the parties to or bound by
     the  Documents,  and there is no usage of trade or course of prior  dealing
     among such parties, that would define,  modify, waive, or qualify the terms
     of any of the Documents.