Document:

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                                                                   EXHIBIT 10.19

                                 UROGEN CORP.

                        COMMON STOCK PURCHASE AGREEMENT

          THIS COMMON STOCK PURCHASE AGREEMENT (the "Agreement") is made as of
January 21, 2000 by and among UroGen Corp., a Delaware corporation (the
"Company"), with its principal office at 10835 Altman Row, Suite 150, San Diego,
California 92121 and the investors whose names appear on the Schedule of
Investors attached hereto as Exhibit A (the "Investors").
                             ---------

                                   ARTICLE I

                           Purchase of Common Stock

          1.1  Common Stock.  Subject to the terms and conditions hereof, the
               ------------
Company will issue and sell to each Investor, and each Investor will each
purchase from the Company, severally, the number of shares (the "Shares") of the
Company's Common Stock (the "Common Stock") set forth opposite such Investor's
name on the Schedule of Investors, at a purchase price of $2.00 per Share. The
maximum aggregate number of Shares issuable hereunder is 2,000,000 Shares.

          1.2  Purchase Price.  The purchase price payable by each Investor for
               --------------
the Shares to be purchased hereunder (the "Purchase Price") shall be equal to
the number of Shares to be purchased by that Investor multiplied by $2.00, as
set forth opposite such Investor's name on the Schedule of Purchasers.

          1.3  Obligations of Investors.  The obligations of the Investors
               ------------------------
hereunder are several and not joint.

                                  ARTICLE II

                             Closing and Delivery

          2.1  Place and Date of Closing.  The initial closing of the
               -------------------------
transactions provided for herein (the "Closing") will be held at the offices of
Wilson Sonsini Goodrich & Rosati, 650 Page Mill Road, Palo Alto, California
94304 at 10:00 a.m. on January 21, 2000 (the "Closing Date") or at such other
time and place as the parties shall mutually agree.

          2.2  Subsequent Closings.  The Company may, at its option, schedule
               -------------------
additional closings (the "Additional Closings") after the first Closing has been
completed on such date or dates as the Company may determine, but not later than
February 29, 2000. The date of each Additional Closing is hereinafter referred
to as an "Additional Closing Date." The first Closing and each Additional
Closing are sometimes referred to herein individually as a "Closing," and the
first Closing Date and each Additional Closing Date are sometimes referred to
herein individually as a "Closing Date." At each Additional Closing, the Company
shall prepare a
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revised Schedule of Investors to include any additional Investors, and each such
additional Investor shall execute a signature page to this Agreement.

          2.3  Delivery.  At the Closing, the Company will deliver to each
               --------
Investor a certificate representing the number of Shares set forth opposite such
Investor's name on the Schedule of Investors. Each Investor shall deliver to the
Company the Purchase Price set forth opposite such Investor's name on the
Schedule of Investors by check or by wire transfer.

                                  ARTICLE III

                 Representations and Warranties of the Company

          The Company hereby represents and warrants to each Investor as
follows:

          3.1  Organization and Standing.  The Company is a corporation duly
               -------------------------
organized and validly existing under, and by virtue of, the laws of the State of
Delaware and is in good standing under such laws.  The Company has the requisite
corporate power to own and operate its properties and assets, and to carry on
its business as presently conducted and as proposed to be conducted.

          3.2  Corporate Power.  The Company will have at the Closing all
               ---------------
requisite legal and corporate power to execute and deliver this Agreement, to
issue the Common Stock and to carry out and perform its obligations under the
terms of this Agreement.

          3.3  Authorization.  All corporate action on the part of the Company,
               -------------
its officers, directors and stockholders that is necessary for the
authorization, execution and delivery of this Agreement by the Company, for the
performance of the Company's obligations hereunder, and for the authorization,
issuance and delivery of the Common Stock, has been taken or will be taken prior
to the Closing.  This Agreement, when executed and delivered, shall constitute
the legal and binding obligations of the Company, enforceable against the
Company in accordance with their respective terms, subject to judicial
principles respecting election of remedies or limiting the availability of
specific performance, injunctive relief, and other equitable remedies, and
bankruptcy, insolvency, reorganization, moratorium or other similar laws now or
hereafter in effect generally relating to or affecting creditors' rights.

          3.4  Capitalization.
               --------------

               (a)  As of December 31, 1999, the authorized capital stock of the
Company consisted of 40,000,000 shares of Common Stock, of which 12,104,101
shares were issued and outstanding; and 5,000,000 shares of preferred stock
("Preferred Stock"), of which 40,000 shares have been designated Series A
Preferred Stock, of which 5,830 shares were issued and outstanding; 10,000
shares have been designated Series B Preferred Stock, of which 2,998 shares were
issued and outstanding; and 17,000 shares have been designated Series C
Preferred Stock, of which no shares were issued or outstanding.  The Series A
Preferred Stock converts to Common Stock on a 1,000-to-1 basis.  The Series B
and C Preferred Stock convert to Common

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Stock based upon the fair market value of the Common Stock at the date of
conversion. All issued and outstanding shares of Common Stock and Preferred
Stock have been duly authorized and validly issued, and are fully paid and non-
assessable. The Company has agreed to repay certain indebtedness to Baxter
Healthcare Corporation, under a Credit Agreement dated July 8, 1998, in shares
of Series B Preferred Stock. As of December 31, 1999, the amount of such
indebtedness was $1,876,003, which will convert into 1,876 shares of Series B
Preferred Stock. In addition, Baxter is obligated to purchase shares of Series C
Preferred Stock upon the Company's achievement of certain milestones.

               (b)  As of December 31, 1999, the Company had reserved 5,172,668
shares of Common Stock for issuance to employees, officers, directors and
consultants of the Company, as may be determined by the Company's Board of
Directors from time to time under the Company's 1995 Stock Plan, as amended, and
1999 Stock Plan (the "Option Plans"). As of December 31, 1999, options to
purchase 3,341,183 shares of Common Stock were outstanding. As of December 31,
1999, there were no outstanding rights, options, warrants, preemptive rights,
conversion rights, rights of first refusal or similar rights or agreements, oral
or written, for the purchase or acquisition from the Company of any shares of
its capital stock or any other securities, except for outstanding options under
the Option Plans and the following warrants: (i) in 1997, the Company issued a
warrant, expiring in July 2001, to purchase 200,000 shares of Common Stock at
$0.05 per share to an officer of the Company; (ii) in July 1998, in connection
with the issuance of convertible debt, the Company issued warrants, expiring in
July 2005, to purchase 515,000 shares of Common Stock at $0.74 per share; (iii)
in April 1999, in connection with the issuance of additional convertible debt,
the Company issued warrants, expiring in April 2006, to purchase 1,333,333
shares of Common Stock at $0.30 per share; (iv) in October 1999, in connection
with a capital lease line, the Company issued warrants, expiring in October
2006, to purchase 250,000 shares of Common Stock at $0.30 per share; (v) in
connection with a guaranty provided by Baxter, the Company has committed to
issue warrants to Baxter, expiring in January 2007, to purchase 500,000 shares
of Common Stock at $0.30 per share.

               (c)  Validity of Securities; Reservation of Shares. The Shares,
                    ---------------------------------------------
when issued, sold and delivered in accordance with the terms of this Agreement,
will be duly authorized, validly issued, fully paid and nonassessable and will
be free and clear of any liens or encumbrances; provided, however, that the
                                                --------  -------
Shares may be subject to restrictions on transfer to the extent provided herein
or under state and/or federal securities laws. Based in part upon the
representations of the Investors in this Agreement, the offer, sale and issuance
of the Shares will be in compliance with all applicable federal and state
securities laws.

          3.5  Governmental Consent, etc. No consent, approval or authorization
               --------------------------
of or designation, declaration or filing with any state or federal governmental
authority on the part of the Company is required in connection with the valid
execution and delivery of this Agreement or the offer, sale or issuance of the
Shares, or the consummation of any other transaction contemplated hereby
(excluding Article VI hereof), except the qualification (or the taking of such
action as may be necessary to secure an exemption from qualification, if
available), under the California Corporate Securities Law and other applicable
blue sky laws, of the offer and sale of

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the Shares, which qualification, if required, will be accomplished in a timely
manner prior to or promptly upon completion of the Closing.

          3.6  SEC Documents; Parent Financial Statements.  The Company has
               ------------------------------------------
furnished or made available to the Investors true and complete copies of all
reports or registration statements filed by it with the U.S. Securities and
Exchange Commission (the "SEC") under the Securities Act of 1933 (the
"Securities Act") or the Securities Exchange Act of 1934 (the "Exchange Act")
since January 1, 1999, all in the form so filed (all of the foregoing being
collectively referred to as the "SEC Documents"), which are all the documents
(other than preliminary materials) that the Company was required to file with
the SEC since such date.  As of their respective filing dates, the SEC Documents
complied in all material respects with the requirements of the Securities Act or
the Exchange Act, as the case may be, and none of the SEC Documents contained
any untrue statement of a material fact or omitted to state a material fact
required to be stated therein or necessary to make the statements made therein,
in light of the circumstances in which they were made, not misleading, except to
the extent corrected by a document subsequently filed with the SEC.  The
financial statements of the Company, including the notes thereto, included in
the SEC Documents (the "Financial Statements") comply as to form in all material
respects with applicable accounting requirements and with the published rules
and regulations of the SEC with respect thereto, have been prepared in
accordance with generally accepted accounting principles consistently applied
(except as may be indicated in the notes thereto or, in the case of unaudited
statements, as permitted by Form 10-Q of the SEC) and present fairly the
consolidated financial position of the Company at the dates thereof and the
consolidated results of its operations and cash flows for the periods then ended
(subject, in the case of unaudited statements, to normal recurring adjustments).
There has been no change in the Company's accounting policies except as
described in the notes to the Financial Statements.

          3.7  No Material Adverse Change.  Since the date of the balance sheet
               --------------------------
included in the Company's most recently filed report on Form 10-QSB or Form 10-
KSB, the Company has conducted its business in the ordinary course and there has
not occurred:  (a) any material adverse change in the financial condition,
liabilities, assets or business of the Company; (b) any amendment or change in
the Certificate of Incorporation or Bylaws of the Company; or (c) any damage to,
destruction or loss of any assets of the Company (whether or not covered by
insurance) that materially and adversely affects the financial condition or
business of the Company.

          3.8  Litigation.  There is no action, suit, proceeding, claim,
               ----------
arbitration or investigation pending, or as to which the Company has received
any notice of assertion against the Company, which in any manner challenges or
seeks to prevent, enjoin, alter or materially delay any of the transactions
contemplated by this Agreement.

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                                  ARTICLE IV

                Representations and Warranties of the Investors

          Each Investor represents and warrants to the Company, as of the
Closing Date, as follows:

          4.1  Authorization.  All action on the part of the Investor for the
               -------------
authorization, execution, delivery and performance by the Investor of this
Agreement has been taken, and this Agreement constitutes a valid and binding
obligation of the Investor, enforceable in accordance with its terms, except as
may be limited by applicable bankruptcy, insolvency, reorganization, or similar
laws relating to or affecting the enforcement of creditors' rights.

          4.2  Experience/Risk.  The Investor is experienced in evaluating and
               ---------------
investing in new companies such as the Company.  The Investor is a sophisticated
investor with such knowledge and experience in financial and business matters so
as to be capable of evaluating the merits and risks of a prospective investment
in the Securities and of bearing the economic risks of such investment.

          4.3  Investment.  The Investor is acquiring the Shares for investment
               ----------
for its own account and not with a view to, or for resale in connection with,
any distribution.  The Investor understands that the Shares to be acquired have
not been registered under the Securities Act by reason of a specific exemption
from the registration provisions of the Securities Act that depends upon, among
other things, the bona fide nature of the investment intent as expressed herein.

          4.4  Restricted Securities.  The Investor acknowledges that the Shares
               ---------------------
must be held indefinitely unless subsequently registered under the Securities
Act or unless an exemption from such registration is available. The Investor is
aware of the provisions of Rule 144 promulgated under the Securities Act, which
permits limited resale of securities purchased in a private placement subject to
the satisfaction of certain conditions, including, in case the Investor has held
the Shares for less than two years or is an affiliate of the Company, among
other things: the availability of certain current public information about the
Company, the resale occurring not less than one year after a party has purchased
and paid for the Shares to be sold, the sale being through a "broker's
transaction" or in transactions directly with a "market maker," and the number
of Shares being sold during any three-month period not exceeding specified
limitations.

          4.5  Limited Public Market.  The Investor understands that only an
               ---------------------
extremely limited public market now exists for the Common Stock, and that a
public market for the Common Stock may not develop or be sustained sufficiently
to permit the resale of the Shares.

          4.6  Access to Data.  The Investor has had an opportunity to discuss
               --------------
the Company's business, management and financial affairs with the Company's
management.  The Investor understands that such discussions, as well as the
written information issued by the Company, were intended to describe the aspects
of the Company's business and prospects which it believes to be material but
were not necessarily a thorough or exhaustive description.

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          4.7  Accredited Investor Status.  The Investor currently does and will
               --------------------------
as of the Closing Date qualify as an "accredited investor" within the meaning of
Regulation D (17 C.F.R. (S) 230.501) of the rules and regulations promulgated
under the Securities Act.

          4.8  Government Consents.  No consent, approval or authorization of or
               -------------------
designation, declaration or filing with any state, federal or foreign
governmental authority on the part of the Investor is required in connection
with the valid execution and delivery of this Agreement by the Investor and the
consummation by the Investor of the transactions contemplated hereby.

          4.9  Legends.  Each certificate representing the Shares shall be
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endorsed with the following legend (in addition to any legend required under
applicable state securities laws):

          THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN
          ACQUIRED FOR INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER
          THE SECURITIES ACT OF 1933. SUCH SECURITIES MAY NOT BE SOLD
          OR TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION, UNLESS
          SUCH SALE OR TRANSFER IS EXEMPT FROM THE REGISTRATION AND
          PROSPECTUS DELIVERY REQUIREMENT OF SAID ACT. COPIES OF THE
          AGREEMENT COVERING THE ACQUISITION OF THESE SECURITIES AND
          RESTRICTING THEIR TRANSFER MAY BE OBTAINED AT NO COST BY
          WRITTEN REQUEST MADE BY THE HOLDER OF RECORD OF THIS
          CERTIFICATE TO THE SECRETARY OF THE CORPORATION AT THE
          PRINCIPAL EXECUTIVE OFFICES OF THE CORPORATION.

The Company need not record, and may instruct its transfer agent not to record,
a transfer of Shares, unless the conditions specified in the foregoing legend
are satisfied.

                                   ARTICLE V

                 Transfer Restrictions; Rights as Stockholder

          5.1  Restrictions on Transfer. Each Investor acknowledges that the
               ------------------------
Shares may not be transferred or assigned in whole or in part without (i) the
prior written consent of the Company and (ii) compliance with applicable federal
and state securities laws; provided, however, that the Securities may be
                           --------  -------
transferred without the prior written consent of the Company in the following
transactions:

               (a)  A transfer of Shares in whole by a holder who is a natural
person during such holder's lifetime or on death by will or intestacy to such
holder's immediate family or to any custodian or trustee for the account of such
holder or such holder's immediate family. As used herein, "immediate family"
shall mean spouse, lineal descendant, father, mother, brother, or sister of the
holder.

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               (b)  A transfer of Shares in whole to the Company or to any
stockholder of the Company.

               (c)  A transfer of Shares in whole or in part to a person who, at
the time of such transfer, is, or is an affiliate of, an officer or director of
the Company.

               (d)  A transfer of Shares in whole but not in part pursuant to
and in accordance with the terms of any merger, consolidation, reclassification
of shares or capital reorganization of a corporate stockholder or pursuant to a
sale of all or substantially all of the stock or assets of a corporate
stockholder.

               (e)  A transfer of Shares in accordance with Rule 144 under the
Securities Act.

               (f)  A transfer of Shares by a holder which is a limited or
general partnership to any of its partners or former partners.

               (g)  A transfer of Shares which is registered under the
Securities Act.

                                  ARTICLE VI

                              Registration Rights

          6.1  Registrable Securities.  The Shares shall be deemed "Registrable
               ----------------------
Securities," and the holders of such shares (the "Holders") shall be entitled to
registration rights with respect thereto as set forth in this Article VI.

          6.2  Registration. The Company shall use commercially reasonable
               ------------
efforts to cause the Registrable Securities held by each Holder to be registered
under the Securities Act so as to permit the resale thereof, and in connection
therewith shall use all commercially reasonable efforts to prepare and file with
the Securities and Exchange Commission (the "SEC") on or before 90 days after
the date hereof, and shall use commercially reasonable efforts to cause to
become effective as soon as practicable thereafter, a registration statement
under the Securities Act covering the Registrable Securities; provided, however,
                                                              --------  -------
that each Holder shall provide all such information and materials to the Company
and take all such action as may be required in order to permit the Company to
comply with all applicable requirements of the SEC and to obtain any desired
acceleration of the effective date of such registration statement. Such
provision of information and materials is a condition precedent to the
obligations of the Company to such Holder pursuant to this Article VI. The
Company shall not be required to effect more than one (1) registration under
this Article VI.

          6.3  Company Obligations. The Company shall (i) keep the registration
               -------------------
statement filed in accordance with Section 6.2 hereof effective until the
earlier of (A) two years after the registration statement has been declared
effective by the SEC or (B) such time as no Holders shall own any Shares; (ii)
forthwith prepare and file with the SEC such amendments and supplements to such
registration statement and the prospectus used in connection therewith as may be
necessary to comply with the provisions of the Securities Act with respect to
the sale or

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other disposition of all securities proposed to be registered in such
registration statement; (iii) furnish to each Holder such number of copies of
any prospectus (including any preliminary prospectus and any amended or
supplemented prospectus) in conformity with the requirements of the Securities
Act, and such other documents, as each Holder may reasonably request in order to
effect the offering and sale of the shares of the Registrable Securities to be
offered and sold, but only while the Company shall be required under the
provisions hereof to cause the registration statement to remain current; (iv)
provide a CUSIP number, transfer agent and registrar for all Registrable
Securities; and (v) use its commercially reasonable efforts to register or
qualify the shares of the Registrable Securities covered by such registration
statement under the securities or blue sky laws of such jurisdictions as each
Holder shall reasonably request (provided that the Company shall not be required
in connection therewith or as a condition thereto to qualify to do business or
to file a general consent to service of process in any such jurisdiction where
it has not been qualified). The Company agrees to pay to each Holder an amount
equal to $0.001 per Share held by such Holder for each day that the Company has
failed to have filed a registration statement as required by Section 6.2 hereof
beyond 90 days after the date hereof.

          6.4  Underwriting.  If the distribution of the Registrable Securities
               ------------
covered by a registration pursuant to this Article VI is to be effected by means
of a firm commitment underwriting, the right of any Holder to include
Registrable Securities in such registration shall be conditioned upon such
Holder's participation in such underwriting and the inclusion of such Holder's
Registrable Securities in the underwriting to the extent provided herein.

               (a)  The Company (together with all Holders proposing to
distribute their securities through such underwriting) shall enter into an
underwriting agreement in customary form with a managing underwriter of
nationally recognized standing selected for such underwriting by the Company but
subject to the approval of a majority in interest of the Holders, which approval
shall not unreasonably be withheld. Notwithstanding any other provision of this
Article VI, if the managing underwriter determines that marketing factors
require a limitation of the number of shares to be underwritten, then the
underwriters may limit the number of shares of Registrable Securities that may
be included in the registration and underwriting, provided that no shares other
than Registrable Securities are included in such registration and underwriting.
The shares so limited shall be allocated among Holders in proportion, as nearly
as practicable, to the respective amounts of Registrable Securities held by such
Holders at the time of filing the registration statement. No Registrable
Securities excluded from the underwriting by reason of the managing
underwriter's marketing limitation shall be included in such registration. If
any Holder disapproves of the terms of the underwriting, such Holder may elect
to withdraw therefrom by written notice to the Company and the managing
underwriter. The Registrable Securities so withdrawn from such underwriting
shall also be withdrawn from registration; provided, however, that if by the
                                           --------  -------
withdrawal of such Registrable Securities a greater number of Registrable
Securities held by other Holders may be included in such registration (up to the
maximum of any limitation imposed by the underwriters), then the Company shall
offer to all Holders who have included Registrable Securities in the
registration the right to include additional Registrable Securities in the same
proportion used in determining the underwriter limitation as set forth above.

                                      -8-
<PAGE>

               (b)  If the managing underwriter has not limited the number of
Registrable Securities to be underwritten in any registration requested pursuant
to Section 6.2, the Company may include securities for its own account or for
the account of others in such registration if the managing underwriter so agrees
and if the number of Registrable Securities held by Holders which would
otherwise have been included in such registration and underwriting will not
thereby be limited. The inclusion of such shares shall be on the same terms as
for the Registrable Securities, subject to the following sentence.  In the event
that the managing underwriter excludes some of the securities to be registered
pursuant to Section 6.2, the securities to be sold for the account of the
Company and any other holders shall be excluded in their entirety prior to the
exclusion of any Registrable Securities.

          6.5  Selling Procedures. Any sale of Registrable Securities pursuant
               ------------------
to the registration statement filed in accordance with Section 6.2 hereof shall
be subject to the following conditions and procedures:

               (a)  Updating the Prospectus. If the distribution of the
                    -----------------------
Registrable Securities covered by a registration pursuant to this Article VI is
not to be effected by means of a firm commitment underwriting, and if the
Company informs the selling Holders that the registration statement or final
prospectus then on file with the SEC is not current or otherwise does not comply
with the Securities Act, the Company shall use commercially reasonable efforts
to provide to the selling Holders a current prospectus that complies with the
Securities Act on or before the date of the intended sale of the Registrable
Securities; provided, however, that no more than once during any one hundred
            --------  -------
eighty-day period (the "Information Delay Period"), the Company shall have the
right to delay the preparation of a current prospectus that complies with the
Securities Act for up to forty-five (45) days, if the Board of Directors of the
Company, acting in good faith, determines that there exists material nonpublic
information about the Company which the Board does not wish to disclose in a
registration statement (due to the fact that such disclosure may not be in the
best interests of the Company's stockholders), which information would otherwise
be required by the Securities Act to be disclosed in the registration statement
to be filed pursuant to Section 6.2 above;

               (b)  General. Notwithstanding the foregoing, the Company shall
                    -------
notify each Holder (A) of any request by the SEC or any other federal or state
governmental authority during the period of effectiveness of the registration
statement for amendments or supplements to the registration statement or related
prospectus or for additional information relating to the registration statement,
(B) of the issuance by the SEC or any other federal or state governmental
authority of any stop order suspending the effectiveness of the registration
statement or the initiation of any proceedings for that purpose, (C) of the
receipt by the Company of any notification with respect to the suspension of the
qualification or exemption from qualification of any of the Registrable
Securities for sale in any jurisdiction or the initiation or threatening of any
proceeding for such purpose, or (D) of the happening of any event which makes
any statement made in the registration statement or related prospectus or any
document incorporated or deemed to be incorporated therein by reference untrue
in any material respect or which requires the making of any changes in the
registration statement or prospectus so that, in the case of the registration
statement, it will not contain an untrue statement of a material fact or omit to
state a

                                      -9-
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material fact required to be stated therein or necessary to make the statements
therein not misleading, and that in the case of the prospectus, it will not
contain an untrue statement of a material fact or omit to state a material fact
necessary in order to make the statements therein, in the light of the
circumstances under which they were made, not misleading. In such event, the
Company may suspend use of the prospectus on written notice to each Holder, in
which case each Holder shall not dispose of Registrable Securities covered by
the registration statement or prospectus until copies of a supplemented or
amended prospectus are distributed to the Holders or until the Holders are
advised in writing by the Company that the use of the applicable prospectus may
be resumed. The Company shall use its commercially reasonable efforts to ensure
that the use of the prospectus may be resumed as soon as practicable. The
Company shall use its commercially reasonable efforts to obtain the withdrawal
of any order suspending the effectiveness of the registration statement, or the
lifting of any suspension of the qualification (or exemption from qualification)
of any of the securities for sale in any jurisdiction. The Company shall, upon
the occurrence of any event contemplated by clause (D), forthwith prepare a
supplement or post-effective amendment to the registration statement or a
supplement to the related prospectus or any document incorporated therein by
reference or file any other required document so that, as thereafter delivered
to the purchasers of the Registrable Securities being sold thereunder, such
prospectus will not contain an untrue statement of a material fact or omit to
state a material fact necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading.

     6.6  Expenses.  The Company shall reimburse, in an amount not to exceed
          --------
$25,000, the out-of-pocket expenses of the Holders incurred, other than
underwriting or selling discounts and commissions, in connection with the
registration of Registrable Securities pursuant to this Article VI including,
without limitation, all SEC, National Association of Securities Dealers, Inc.
and blue sky registration and filing fees, printing expenses, transfer agents'
and registrars' fees, and the reasonable fees and disbursements of the Company's
outside counsel and the Company's independent accountants.

     6.7  Indemnification.
          ---------------

          (a) In connection with any registration pursuant to this Article VI,
the Company will indemnify each Holder, each of its officers and directors and
partners, and each person controlling such Holder within the meaning of Section
15 of the Securities Act, with respect to which registration has been effected
pursuant to this Agreement, against all expenses, claims, losses, damages or
liabilities (or actions in respect thereof), including any of the foregoing
incurred in settlement of any litigation, commenced or threatened, arising out
of or based on any untrue statement (or alleged untrue statement) of a material
fact contained in any registration statement, prospectus, offering circular or
other document, or any amendment or supplement thereto, incident to any such
registration, or based on any omission (or alleged omission) to state therein a
material fact required to be stated therein or necessary to make the statements
therein, in light of the circumstances in which they were made, not misleading,
or any violation by the Company of the Securities Act, the Exchange Act, state
securities laws or any rule or regulation promulgated under such laws applicable
to the Company in connection with any such registration, and the Company will
reimburse each such Holder, each of its officers and

                                      -10-
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directors, and each person controlling such Holder, for any legal and any other
expenses reasonably incurred, as such expenses are incurred, in connection with
investigating, preparing or defending any such claim, loss, damage, liability or
action, provided that the Company will not be liable in any such case to the
extent that any such claim, loss, damage, liability or expense arises out of or
is based on any untrue statement or omission or alleged untrue statement or
omission, made in reliance upon information furnished to the Company by such
Holder or controlling person, provided, however, that the foregoing indemnity
agreement is subject to the condition that, insofar as it relates to any such
untrue statement, alleged untrue statement, omission or alleged omission made in
a preliminary prospectus on file with the Commission at the time the
registration statement becomes effective or the amended prospectus is filed with
the Commission pursuant to Rule 424(b) (the "Final Prospectus"), such indemnity
agreement shall not inure to the benefit of any Holder, if a copy of the Final
Prospectus was not furnished to the person asserting the loss, liability, claim
or damage at or prior to the time such action is required by the Securities Act,
and if the Final Prospectus would have cured the defect giving rise to the loss,
liability, claim or damage.

          (b) Each Holder will indemnify the Company, each of its directors and
officers, other holders of the Company's securities covered by such registration
statement, each person who controls the Company within the meaning of Section 15
of the Securities Act, and each other such Holder, each of its officers and
directors and each person controlling such other Holder within the meaning of
Section 15 of the Securities Act, against all claims, losses, damages and
liabilities (or actions in respect thereof) arising out of or based on any
untrue statement (or alleged untrue statement) of a material fact contained in
any such registration statement, prospectus, offering circular or other
document, or any omission (or alleged omission) to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading, or any violation by the Holder of the Securities Act, the Exchange
Act, state securities laws or any rule or regulation promulgated under such laws
applicable to the Holder, and will reimburse the Company, such other Holders,
such directors, officers, persons, underwriters or control persons for any legal
or any other expenses reasonably incurred, as such expenses are incurred, in
connection with investigating or defending any such claim, loss, damage,
liability or action, to the extent that such untrue statement (or alleged untrue
statement) or omission (or alleged omission) is made in such registration
statement, prospectus, offering circular or other document in reliance
information furnished to the Company by such Holder.

          (c) Each party entitled to indemnification under this Section 6.7 (an
"Indemnified Party") shall give notice to the party required to provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit the Indemnifying Party to assume the defense of any such claim or any
litigation resulting therefrom, provided that counsel for the Indemnifying
Party, who shall conduct the defense of such claim or litigation, shall be
approved by the Indemnified Party (whose approval shall not unreasonably be
withheld), and the Indemnified Party may participate in such defense at such
party's expense, and provided further that the failure of any Indemnified Party
to give notice as provided herein shall not relieve the Indemnifying Party of
its obligations under this Agreement unless the failure to give such notice is
materially prejudicial to an Indemnifying Party's ability to defend such action,
and provided

                                      -11-
<PAGE>

further that the Indemnifying Party shall not assume the defense for matters as
to which there is a conflict of interest or there are separate and different
defenses; provided, that the Indemnifying Party shall remain liable for
reasonable legal expenses of one counsel for the Indemnified Party. No
Indemnifying Party, in the defense of any such claim or litigation, shall,
except with the consent of each Indemnified Party (whose consent shall not be
unreasonably withheld), consent to entry of any judgment or enter into any
settlement which does not include as an unconditional term thereof the giving by
the claimant or plaintiff to such Indemnified Party of a release from all
liability in respect to such claim or litigation.

          (d) Notwithstanding the foregoing, to the extent that provisions
relating to indemnification and contribution contained in an underwriting
agreement entered into in connection with an underwritten public offering
pursuant to Section 6.4 are in conflict with the foregoing provisions, the
provisions in such underwriting agreement shall control.

                                  ARTICLE VII

                     Additional Covenants of the Investors

     7.1  Voting.  Until such time as an Investor holds securities of the
          ------
Company representing less than 5% of the total outstanding voting stock of the
Company, such Investor shall: (i) take such all action necessary or appropriate
such that all voting stock owned by such Investor and its affiliates are voted
(in person or by proxy) (A) for the nominees to the Company's Board of Directors
nominated and recommended to the Company's stockholders by the Company
management, and (B) on all other matters to be voted on by the Company's
stockholders, in such manner as is recommended by the Company's management to
the stockholders; and (ii) be present, in person or by proxy, at all duly held
meetings of the stockholders of the Company so that all voting stock held by
such Investor may be counted for purposes of determining the presence of a
quorum at such meetings.

     7.2  Voting Trusts.  Except as consented to by the Company in writing, no
          -------------
Investor shall deposit any voting stock of the Company owned by it in a voting
trust or subject any such stock to any similar arrangement or agreement with
respect to the voting of such stock.

     7.3  Solicitation of Proxies.  Without the Company's prior written consent,
          -----------------------
no Investor shall solicit proxies with respect to any voting stock of the
Company, nor become a "participant" in any "election contest" as such terms are
used in Rule 14a-11 of Regulation 14A under the Exchange Act relating to the
election of directors of the Company.

     7.4  Acts in Concert with Others.  Except as permitted in writing by the
          ---------------------------
Company, no Investor shall join any group or otherwise act in concert with any
third person for the purpose of acquiring, holding or disposing of voting stock
of the Company.

                                      -12-
<PAGE>

                                 ARTICLE VIII

                                 Miscellaneous

     8.1  Waivers and Amendments.  With the written consent of the holders of a
          ----------------------
majority of the Shares, the obligations of the Company and the rights of the
holders of Shares under this Agreement may be waived (either generally or in a
particular instance, either retroactively or prospectively and either for a
specified period of time or indefinitely), and with the same consent the
Company, when authorized by resolution of its board of directors, may enter into
a supplementary agreement for the purpose of adding any provisions to or
changing in any manner or eliminating any of the provisions of this Agreement;
provided, however, that (i) all persons affected by such waiver or supplemental
--------  -------
agreement are treated in the same manner, unless the record or beneficial
holders of all Shares consent to such amendment or supplemental agreement, and
(ii) no such waiver or supplemental agreement shall reduce the above percentage
of holders of Shares which is required to consent to any waiver or supplemental
agreement, without the consent of the record or beneficial holders of all
Shares. Upon the effectuation of each such waiver, consent, agreement, amendment
or modification the Company shall promptly give written notice thereof to the
record holders of Shares who have not previously consented thereto in writing.
Neither this Agreement nor any provisions hereof may be changed, waived,
discharged or terminated orally, but only by a signed statement in writing.

     8.2  Governing Law.  This Agreement shall be governed in all respects by
          -------------
the laws of the State of California as such laws are applied to agreements
between California residents entered into and to be performed entirely within
California.

     8.3  Survival.  The representations, warranties, covenants and agreements
          --------
made herein shall survive the execution and delivery of this Agreement and the
sale of the Shares.

     8.4  Successors and Assigns.  Except as otherwise expressly provided
          ----------------------
herein, the provisions hereof shall inure to the benefit of, and be binding
upon, the successors, assigns, heirs, executors and administrators of the
parties hereto.

     8.5  Entire Agreement.  This Agreement and the other documents delivered
          ----------------
pursuant hereto constitute the full and entire understanding and agreement
between the parties with regard to the subjects hereof and thereof.

     8.6  Severability.  In case any provision of this Agreement shall be
          ------------
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

     8.7  California Corporate Securities Law.  THE SALE OF THE SECURITIES WHICH
          -----------------------------------
ARE THE SUBJECT OF THIS AGREEMENT HAS NOT BEEN QUALIFIED WITH THE COMMISSIONER
OF CORPORATIONS OF THE STATE OF CALIFORNIA AND THE ISSUANCE OF THE SECURITIES OR
THE PAYMENT OR RECEIPT OF ANY PART OF THE CONSIDERATION THEREFOR PRIOR TO SUCH
QUALIFICATION IS UNLAWFUL UNLESS THE SALE OF SECURITIES IS EXEMPT FROM THE
QUALIFICATION BY

                                      -13-
<PAGE>

SECTION 25100, 25102, OR 25105 OF THE CALIFORNIA CORPORATIONS CODE. THE RIGHTS
OF ALL PARTIES TO THIS AGREEMENT ARE EXPRESSLY CONDITIONED UPON SUCH
QUALIFICATION BEING OBTAINED, UNLESS THE SALE IS SO EXEMPT.

     8.8  Titles and Subtitles.  The titles of the paragraphs and subparagraphs
          --------------------
of this Agreement are for convenience of reference only and are not to be
considered in construing this Agreement.

     8.9  Delays or Omissions.  It is agreed that no delay or omission to
          -------------------
exercise any right, power or remedy accruing to the Investor, upon any breach or
default of the Company under this Agreement, shall impair any such right, power
or remedy, nor shall it be construed to be a waiver of any such breach or
default, or any acquiescence therein, or of or in any similar breach or default
thereafter occurring; nor shall any waiver of any single breach or default be
deemed a waiver of any other breach or default theretofore or thereafter
occurring. It is further agreed that any waiver, permit, consent or approval of
any kind or character by the Investor of any breach or default under this
Agreement, or any waiver by the Investor of any provisions or conditions of this
Agreement must be in writing and shall be effective only to the extent
specifically set forth in writing and that all remedies, either under this
Agreement, or by law or otherwise afforded to the Investor, shall be cumulative
and not alternative.

     8.10 Notices.  Any notice or report required in this Agreement or permitted
          -------
to be given shall be given by depositing the same in the United States mail,
postage prepaid and addressed to the parties as follows: (i) if to the Company,
to the attention of the President at the Company's principal address set forth
on the first page hereof, with a copy to Herbert P. Fockler, Wilson Sonsini
Goodrich & Rosati, 650 Page Mill Road, Palo Alto, California 94304, and (ii) if
to an Investor, to such Investor at such Investor's address as set forth on the
Schedule of Investors.

     8.11 Counterparts.  This Agreement may be executed in any number of
          ------------
counterparts, each of which shall be an original, but all of which together
shall constitute one instrument.

                     [This space intentionally left blank]

                                      -14-
<PAGE>

     IN WITNESS WHEREOF, the parties have caused this Common Stock Purchase
Agreement to be duly executed and delivered as of the date first written above.

     THE COMPANY:                   UROGEN CORP.

                                    By:
                                        ______________________________________
                                        Robert E. Sobol, M.D.
                                        President and Chief Executive Officer

     THE INVESTORS:                 INVESTOR

                                    By:
                                        ______________________________________
                                        Name: ((FirstName)) ((LastName))
                                              --------------------------
                                        Title:
                                              __________________________

              [Signature Page to Common Stock Purchase Agreement]

<PAGE>

                                   EXHIBIT A

                             SCHEDULE OF INVESTORS

Name and Address of Investor          Aggregate Purchase   Number of Shares of
                                      Price                Common Stock

Aries Domestic Fund, L.P.             $  867,052.00        433,526
787 7/th/ Avenue, 48/th/ Floor
New York, NY 10019
Attn: David M. Tanen

Aries Domestic Fund II, L.P.          $  134,848.00         67,424
787 7/th/ Avenue, 48/th/ Floor
New York, NY 10019
Attn: David M. Tanen

The Aries Master Fund                 $1,910,600.00        955,300
Attn: David M. Tanen

Lindsay A. Rosenwald, M.D.            $   50,000.00         25,000
441 West End Avenue, #8A
New York, NY 10024

Mark C. Rogers, M.D.                  $   25,000.00         12,500
787 7/th/ Avenue, 48/th/ Floor
New York, NY 10019

Wayne Rubin                           $   12,500.00          6,250
1022 Loft Road
Woodmere, NY 11598

EGM Medical Technology Fund, L.P.     $  270,000.00        135,000
1 Embarcadero Center, Suite 2410
San Francisco, CA 94111
Attn: Marc Pentopoulus

EGM Medical Technology Offshore Fund  $  180,000.00         90,000
1 Embarcadero Center, Suite 2410
San Francisco, CA 94111
Attn: Marc Cohen

                                     -A1-
<PAGE>

Name and Address of Investor          Aggregate            Number of Shares of
                                      Purchase Price       Common Stock

Stephen Alexander Consultants, LLC    $1,000,000.00        500,000
611 Druid Road East, Suite 200
Clearwater, FL 33756
Attn: Paul Watson

Clearwater Offshore Fund, Ltd.        $1,100,000.00        550,000
c/o Oceanic New World Trust
Euro-Canadian Centre
Marlborough Street
P.O. Box N-4465
Nassau, Bahamas
Attn: Hans F. Heye

Marc A. Pentopoulus                   $   80,000.00         40,000
1831 Pacific Avenue, #202
San Francisco, CA 94109

TOTAL                                 $5,630,000.00

                                     -A2-AGREEMENT  AND  GENERAL  MUTUAL  RELEASE

     This Agreement ("Agreement") is entered into as of this 6th day of January,
2000,  by and between ROBERT KENT HONEYMAN, an individual, and CAN-AM RESOURCES,
INC.,  a  Georgia  corporation  (hereinafter  referred  to  as  "Can  Am"  and,
collectively  with Robert Kent Honeyman, as "Honeyman"), on one hand, and LAKOTA
TECHNOLOGIES,  INC., a Colorado corporation (hereinafter referred to, along with
its  subsidiaries Lakota Oil and Gas, Inc., a Texas corporation, 2-Infinity.com,
Inc.,  a  Texas  corporation,  and  AirNexus,  Inc.,  a  Texas  corporation,  as
"Lakota"),  HOWARD  N.  WILSON,  an  individual  (hereinafter  referred  to  as
"Wilson"),  MAJED  JALALI,  an individual (hereinafter referred to as "Jalali"),
PATRICK "CODY" MORGAN, an individual (hereinafter referred to as "Morgan"), JOHN
B.  HAYES,  an  individual (hereinafter referred to as "Hayes"), and NICHOLAS R.
ATHENS,  an  individual (hereinafter referred to as "Athens"), on the other hand
(each  of  Honeyman,  Lakota, Wilson, Jalali, Morgan, Hayes, and Athens shall be
referred  to  as  a  "Party"  and  collectively  as  the  "Parties").

                                    RECITALS

     A.     WHEREAS,  the  Parties desire to enter into this agreement regarding
(i)  Honeyman's  continued employment by Lakota, (ii) his position as an officer
and  director  of Lakota, and (iii) compensation and other consideration due and
owing  between  Lakota  and  Honeyman  (the  "Matters").

     B.     The  Parties  desire,  pursuant  to  the terms of this Agreement, to
resolve  the  Matters  and  all disputes between Honeyman and the other Parties.

     NOW,  THEREFORE,  for good and adequate consideration, the receipt of which
is hereby acknowledged, without admitting or denying any wrongdoing by any Party
hereto,  the  Parties  covenant,  promise  and  agree  as  follows:

                                    AGREEMENT

     1.     Obligations  of  Honeyman.  As  a  material  term of this Agreement,
            -------------------------
Honeyman  agrees  to  the  following:

A.     Resignations.  As  evidenced  by  his  execution  hereof, Honeyman hereby
resigns,  effective  as  of the Effective Date as defined below, as an employee,
officer,  and director of Lakota and each of its subsidiaries.  Honeyman further
covenants  and  agrees,  except  as  set forth in this Agreement, to release the
Parties  hereto,  and each of them, from any and all obligations with respect to
salary,  severance,  benefits,  indebtedness  to or from the Parties and each of
them,  and  any and all other obligations which may now or in the future be owed
to  Honeyman.  Honeyman  further  agrees  to  return  any  and  all  documents,
correspondence,  books,  records,  keys,  and  other  items  in  his  possession
belonging  to  Lakota  within  ten  (10)  days  of  the  Effective  Date.

<PAGE>

B.     Discharge  of Indebtedness.  As evidenced by his execution hereof, except
as  otherwise  provided  herein, Honeyman hereby waives and forgives any amounts
owing  to  him  and/or  Can  Am  by  Lakota.

C.     Consulting Services.  For a period of up to sixty (60) days following the
execution  of  this Agreement, as directed and determined solely by the Board of
Directors  of  Lakota,  Honeyman shall provide a reasonable level of services to
Lakota  as  an independent consultant and contractor in connection with Lakota's
currently  pending  SB-2  registration  statement.

D.     Release  of  Lakota, Wilson, Jalali, Morgan, Hayes, and Athens.  Honeyman
hereby  forever  releases  and discharges Lakota, Wilson, Jalali, Morgan, Hayes,
and  Athens,  and  each  of  them,  their  affiliates,  divisions, predecessors,
successors  and  assigns,  and  each and all of their present and former agents,
officers,  directors,  attorneys,  and  employees,  from and against any and all
claims,  agreements, contracts, covenants, representations, obligations, losses,
liabilities,  demands and causes of action, known or unknown, which Honeyman may
now  or  hereafter  have  or  claim  to  have  against  them,  arising out of or
pertaining to the subject matter of the Matters.  Honeyman further covenants and
agrees,  except  as  set forth in this Agreement, to release the Parties hereto,
and  each  of  them,  from  any  and  all  obligations  with  respect to salary,
severance,  benefits,  indebtedness to or from the Parties and each of them, and
any  and  all  other  obligations  which  may  now  or  in the future be owed to
Honeyman.  This  release  of claims and defenses shall not alter the prospective
duties  between  the  parties  under  this  Agreement.

E.     Conditions  Precedent.  Each  of the obligations of Honeyman as set forth
in  this  Agreement is subject to, as conditions precedent to the performance of
his  obligations  hereunder,  the  performance of the obligations of each of the
other  Parties to this Agreement.  The effective date of the actions to be taken
by  Honeyman  hereunder  (the  "Effective  Date")  shall be the date that Lakota
delivers  the $25,000 as required by section 2(A)(i) and the 2,000,000 shares as
required  by  section  2(A)(iv),  and  Jalali  delivers  the 1,000,000 shares as
required  by  section  2(B)  hereof.

     2.     Obligations  of  Lakota,  Wilson, Jalali, Morgan, Hayes, and Athens.
            -------------------------------------------------------------------

A.     Obligations  of  Lakota.

<PAGE>
(i)     Within  five  (5)  days  of  the  date hereof, Lakota shall deliver, via
certified  funds  or  bank  wire,  to  the  Cutler Law Group, attention Brian A.
Lebrecht,  Esq.,  as  escrow  agent (the "Escrow Agent"), the sum of Twenty Five
Thousand  Dollars  ($25,000)  to be delivered to Honeyman upon execution of this
Agreement  by all Parties and delivery of the Pledged Shares to the Escrow Agent
as  set  forth in section 2(B) hereof, and as more fully set forth in the Escrow
Agreement  of even date herewith and executed by all Parties hereto (the "Escrow
Agreement").

(ii)     Within  ten  (10)  days  of  the  earlier of (a) the effectiveness of a
registration  statement,  whether  on  Form SB-2 or otherwise (the "Registration
Statement"), as declared by the United States Securities and Exchange Commission
(the  "SEC")  (the  "Registration Effective Date"), or (b) March 1, 2000, Lakota
shall  deliver  or  cause  to be delivered, via certified funds or bank wire, to
Honeyman  the sum of One Hundred Thousand Dollars ($100,000).  In the event that
Lakota  fails to make the payment as described in this section 2(A)(ii) by March
11,  2000,  and  upon written demand received by the Escrow Agent from Honeyman,
then  1,000,000  shares  of Lakota common stock issued in the name of Jalali and
held  by the Escrow Agent (see section 2(B) below) shall be immediately released
to Honeyman in full satisfaction of the obligations in this section 2(A)(ii), as
more  fully  set  forth  in  the  Escrow  Agreement.

(iii)     On  or  before February 5, 2000, and again on or before March 5, 2000,
Lakota  shall  pay  to  Honeyman  the sum of Seven Thousand Five Hundred Dollars
($7,500) as a consulting fee for services rendered in accordance with section 18
of  this  Agreement.  Honeyman shall not be reimbursed for any expenses incurred
as a result of rendering consulting services unless such expenses are previously
approved,  in  writing,  by  Lakota.

(iv)     Within  five  (5)  days of the date hereof, Lakota shall deliver to the
Escrow  Agent  an  aggregate of 2,000,000 shares of "restricted" common stock of
Lakota,  issued  to  Honeyman  or  his assigns, to be delivered to Honeyman upon
execution of this Agreement by all Parties and delivery of the Pledged Shares to
the Escrow Agent as set forth in section 2(B) hereof, as more fully set forth in
the  Escrow  Agreement.

(v)     Within twenty (20) days of the earlier of (i) the Registration Effective
Date,  (ii) March 11, 2000, or (iii) such other date as Lakota becomes obligated
to  file  periodic  reports pursuant to Section 13(a) or 15(d) of the Securities
Exchange  Act  of  1934,  Lakota  shall  deliver  to  Honeyman or his assigns an
aggregate  of  2,000,000  shares  of  "free trading" common stock of Lakota.  In
accordance  herewith, Lakota hereby undertakes to prepare and file a Form S-8 or
other  form of registration statement as necessary to effectuate the delivery of
the  shares  as  described  in  this  section  2(A)(v).

<PAGE>
(vi)     As  evidenced by its execution hereof, Lakota hereby forever waives and
forgives  any  amounts  owing  to  it  by  Honeyman  and/or  Can  Am.

(vii)     In  the  event  an  "Indemnifiable Action" (as hereinafter defined) is
brought  against  Honeyman at any time, then Lakota agrees to indemnify Honeyman
for  any and all liabilities related to or arising from the Indemnifiable Action
(the  "Indemnified Liabilities").  Indemnifiable Action shall mean a legal cause
of  action commenced and physically served on Honeyman which names Honeyman as a
party,  related  to  or  arising from his relationship (whether past, present or
future)  as an employee, consultant, officer and/or director of Lakota or any of
its  current  or  pre-existing subsidiaries  The foregoing indemnification shall
further  be  subject  to  the  requirement  that  in  the event Honeyman becomes
actually  aware of an Indemnifiable Action, he shall have Five (5) business days
to  deliver  written  notice  to Lakota of his intention to enforce the terms of
this  Agreement.

B.          Obligations  of  Jalali.  Within  five  (5) days of the date hereof,
Jalali shall deliver to the Escrow Agent an aggregate of One Million (1,000,000)
shares  of  Lakota  common  stock  (the  "Pledged  Shares"),  along with a fully
executed  and  medallion guaranteed stock power sufficient to transfer title and
ownership of the Pledged Shares, to be delivered in accordance with the terms of
the  Escrow  Agreement  which  shall  include  terms  substantially  as follows:

(i)     Upon  the  timely delivery of the $100,000 set forth in section 2(A)(ii)
hereof,  the  Escrow  Agent  shall  return the Pledged Shares to Jalali, and the
obligations of the Escrow Agent and Jalali arising under this section 2(B) shall
cease;

(ii)     Notwithstanding  the foregoing, however, in the event that the $100,000
is  not  timely  delivered  to Honeyman as set forth in section 2(A)(ii) hereof,
then  upon  receipt  of  written  demand from Honeyman after March 11, 2000, the
Escrow  Agent  shall  deliver  to  Honeyman  the  Pledged Shares, along with the
executed stock power, and the obligations of the Escrow Agent and Jalali arising
under  this  section  2(B)  shall  cease.

<PAGE>
C.     Obligations  of  Lakota,  Wilson,  Jalali,  Morgan,  Hayes,  and  Athens.
Lakota,  Wilson,  Jalali,  Morgan, Hayes, and Athens, and each of them and their
officers,  directors,  shareholders,  members,  managers,  employees, attorneys,
associates,  affiliates,  and  assigns,  hereby  forever  release  and discharge
Honeyman,  his  affiliates, divisions, predecessors, successors and assigns, and
each  and  all of his present and former agents, officers, directors, attorneys,
and  employees,  from  and  against  any  and all claims, agreements, contracts,
covenants, representations, obligations, losses, liabilities, demands and causes
of  action,  known  or unknown, which Lakota, Wilson, Jalali, Morgan, Hayes, and
Athens  may  now or hereafter have or claim to have against Honeyman arising out
of  or  pertaining to the subject matter of the Matters.  This release of claims
and  defenses  shall  not alter the prospective duties between the parties under
this  Agreement.

D.     Conditions Precedent.  Each of the obligations of Lakota, Wilson, Jalali,
Morgan,  Hayes,  and Athens, and each of them, as set forth in this Agreement is
subject  to,  as  conditions  precedent  to the performance of their obligations
hereunder,  the  performance  of  the obligations of Honeyman under the terms of
this  Agreement.

     4.     Scope  of  Release.  Each  Party  acknowledges  and agrees that this
            -------------------
Agreement  applies to all claims that any Party may have against the other Party
relating  to  the  subject matter of the Matters, including, but not limited to,
causes  of  action, injuries, damages, claims for costs or losses to any Party's
person  and  property,  real  or  personal,  whether those injuries, damages, or
losses  are  known  or  unknown, foreseen or unforseen, or patent or latent, and
further  includes any and all acts and matters related to Honeyman's involvement
with Lakota as an employee, consultant, officer and/or director.  This Agreement
is  not  intended to, nor shall it, alter or modify any rights or obligations of
the Parties under any other agreements not mentioned herein to which the Parties
may  be  a  party.

     5.     Confidentiality.  Each  Party  hereto  will  hold and will cause its
            ----------------
consultants  and  advisors  to  hold  in  strict confidence, unless compelled to
disclose  by  judicial  or  administrative  process  or,  in  the opinion of its
counsel,  by other requirements of law, all documents and information concerning
any  other  Party  furnished  it  by  such other Party or its representatives in
connection  with  the  subject  matter of the Matters (except to the extent that
such  information can be shown to have been (i) previously known by the Party to
which  it  was  furnished,  (ii)  in  the public domain through no fault of such
Party, or (iii) later lawfully acquired from other sources by the Party to which
it  was furnished), and each Party will not release or disclose such information
to any other person, except its auditors, attorneys, financial advisors, bankers
and  other  consultants  and  advisors  in connection with this Agreement.  Each
Party  shall  be  deemed  to  have satisfied its obligation to hold confidential
information  concerning  or supplied by the other Party if it exercises the same
care  as  it  takes to preserve confidentiality for its own similar information.

     6.     No Representations.  Each Party acknowledges and represents that, in
            ------------------
executing  this  Agreement,  such  Party  has  not  relied  on  any inducements,
promises,  or  representations  made  by  any Party or any party representing or
serving  such  Party,  unless  expressly  set  forth  herein.

     7.     Disputed  Claim.  This  Agreement  pertains  to a disputed claim and
            ---------------
does  not  constitute  an  admission  of liability by any Party for any purpose.

<PAGE>
     8.     Covenant  Re:  Assignment.  The  Parties  hereto,  and each of them,
            -------------------------
represent  and  warrant  to each other that each is the sole and lawful owner of
all  right, title and interest in and to every claim and other matter which each
purports  to  release  herein,  and  that  they  have not heretofore assigned or
transferred,  or  purported  to  assign  or  transfer,  to  any  person,  firm,
association,  corporation  or  other entity, any right, title or interest in any
such  claim  or  other matter.   In the event that such representation is false,
and  any  such  claim or matter is asserted against any Party hereto (and/or the
successor  of  such  Party)  by  any  Party  or  entity  who  is the assignee or
transferee  of  such  claim  or  matter  shall  fully indemnify, defend and hold
harmless  the  Party  against  who  such  claim  or  matter is asserted (and its
successors)  from  and  against  such claim or matter and from all actual costs,
fees,  expenses,  liabilities,  and  damages  which  that  Party  (and/or  its
successors)  incurs  as  a  result  of  the  assertion  of such claim or matter.

     9.     Survival  of  Warranties.  The  representations  and  warranties
            ------------------------
contained  in  this Agreement are deemed to and do survive the execution hereof.

     10.     Modifications.  This  Agreement  may  not  be  amended,  canceled,
             -------------
revoked  or  otherwise modified except by written agreement subscribed by all of
the  Parties  to  be  charged  with  such  modification.

     11.     Agreement  Binding  on Successors.  This Agreement shall be binding
             ---------------------------------
upon  and  shall inure to the benefit of the Parties hereto and their respective
partners,  employees,  agents,  servants,  heirs,  administrators,  executors,
successors,  representatives  and  assigns.

     12.     Attorney's  Fees.  All  Parties hereto agree to pay their own costs
             ----------------
and  attorneys'  fees  except  as  follows:

     (a)     In  the event of any action, suit or other proceeding instituted to
remedy, prevent or obtain relief from a breach of this Agreement, arising out of
a  breach  of  this Agreement, involving claims within the scope of the releases
contained in this Agreement, or pertaining to a declaration of rights under this
Agreement,  the  prevailing  Party  shall recover all of such Party's attorneys'
fees and costs incurred in each and every such action, suit or other proceeding,
including  any  and  all  appeals  or  petitions  therefrom.

     (b)     As  used  herein,  attorneys' fees shall be deemed to mean the full
and actual costs of any legal services actually performed in connection with the
matters  involved,  calculated  on  the  basis  of  the usual fee charged by the
attorneys  performing  such  services.

     13.     Choice of Law; Venue.  This Agreement and the rights of the parties
             --------------------
hereunder  shall be governed by and construed in accordance with the laws of the
State  of  Texas,  including all matters of construction, validity, performance,
and enforcement and without giving effect to the principles of conflict of laws.
Any  cause  of action brought in connection with this Agreement shall be brought
in  Harris  County,  in  the  State  of  Texas.

<PAGE>
     14.     Terms  &  Conditions.     The Parties agree and stipulate that each
             --------------------
and  every  term and condition contained in this Agreement is material, and that
each and every term and condition may be reasonably accomplished within the time
limitations,  and  in  the  manner  set  forth  in  this  Agreement.

     15.     Time  is of the Essence.  The Parties agree and stipulate that time
             ------------------------
is  of the essence with respect to compliance with each and every item set forth
in  this  Agreement.

     16.     Entire  Agreement.  This  Agreement  and  the  Escrow Agreement set
             ------------------
forth  the  entire  agreement  and  understanding  of  the  Parties  hereto  and
supersedes any and all prior agreements, arrangements and understandings related
to  the subject matter hereof.  No understanding, promise, inducement, statement
of  intention, representation, warranty, covenant or condition, written or oral,
express  or implied, whether by statute or otherwise, has been made by any party
hereto  which  is  not  embodied  in  this  Agreement or the written statements,
certificates, or other documents delivered pursuant hereto or in connection with
the  transactions  contemplated hereby, and no Party hereto shall be bound by or
liable  for  any  alleged  understanding,  promise,  inducement,  statement,
representation,  warranty,  covenant  or  condition  not  so  set  forth.

     17.     Counterparts.  This  Agreement  may  be  executed  in  one  or more
             ------------
counterparts,  each  of  which when executed and delivered shall be an original,
and  all  of  which  when executed shall constitute one and the same instrument.

     IN  WITNESS  WHEREOF,  the  Parties  hereto,  agreeing  to be bound hereby,
execute  this  Agreement  upon  the  date  first  set  forth  above.

Dated:                              ROBERT  KENT  HONEYMAN,  an  individual

                                    /s/ Robert Kent Honeyman
                                    ______________________________________

Dated:                              CAN-AM  RESOURCES,  INC.,  a  Georgia
                                    corporation

                                    /s/ Robert Kent Honeyman
                                    ________________________________________
                                    By:     Robert  Kent  Honeyman
                                    Its:     President

<PAGE>
Dated:                              LAKOTA  TECHNOLOGIES,  INC.

                                    /s/ Majed Jalali
                                    ______________________________________
                                   By:     Majed  Jalali,  on  behalf  of  the
                                   Board  of  Directors

Dated:                             HOWARD  N.  WILSON,  an  individual and as a
                                   Director  of  Lakota  Technologies,  Inc.

                                    /s/ Howard N. Wilson
                                   ______________________________________

Dated:                              MAJED  JALALI,  an  individual  and  as  a
                                    Director  of  Lakota  Technologies,  Inc.

                                    /s/ Majed Jalali
                                    ______________________________________

Dated:                              PATRICK  "CODY" MORGAN, an individual and as
                                    a  Director  of  Lakota  Technologies,  Inc.

                                    /s/ Patrick "Cody" Morgan
                                    ______________________________________

Dated:                              JOHN  B.  HAYES,  an  individual  and  as  a
                                    Director  of  Lakota  Technologies,  Inc.

                                     /s/ John B. Hayes
                                    ______________________________________

Dated:                              NICHOLAS  R.  ATHENS, an individual and as a
                                    Director  of  Lakota  Technologies,  Inc.

                                    /s/ Nicholas R. Athens
                                    ______________________________________

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