Document:

<PAGE>
                                                                   Exhibit 10.23

                  EIGHTEENTH AMENDMENT TO AMENDED AND RESTATED
                                CREDIT AGREEMENT

         This EIGHTEENTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT
("AMENDMENT") is dated as of December 31, 2001, and is entered into by and among
UNIONTOOLS, INC., a Delaware corporation ("BORROWER"), ACORN PRODUCTS, INC., a
Delaware corporation ("HOLDINGS"), HAWTHORNE TOOLS, INC., f/k/a H.B. Sherman
Manufacturing Company, a Missouri corporation ("H.B. SHERMAN"), PINETREE TOOLS,
INC., f/k/a Uniontools Irrigation, Inc., a Delaware corporation formerly known
as UnionTools Watering Products, Inc. ("IRRIGATION" and together with Borrower,
Holdings and H.B. Sherman collectively, the "LOAN PARTIES"), HELLER FINANCIAL,
INC., in its capacity as Agent for the Lenders party to the Credit Agreement
described below ("AGENT"), and the Lenders which are signatories hereto.

         WHEREAS, Borrower, Agent and Lenders have entered into an Amended and
Restated Credit Agreement dated as of May 20, 1997, as amended by that certain
Amendment No. 1 to Credit Agreement dated November 24, 1997, Second Amendment to
Credit Agreement dated as of May 22, 1998, Third Amendment to Amended and
Restated Credit Agreement dated as of October 29, 1998, Fourth Amendment to
Amended and Restated Credit Agreement dated as of February 26, 1999, Fifth
Amendment to Amended and Restated Credit Agreement dated as of June 10, 1999,
Sixth Amendment to Amended and Restated Credit Agreement dated as of October 28,
1999, Consent and Seventh Amendment to Amended and Restated Credit Agreement
dated as of March 31, 2000, Eighth Amendment to Amended and Restated Credit
Agreement dated as of April 30, 2001, Ninth Amendment to Amended and Restated
Credit Agreement dated as of May 7, 2001, Tenth Amendment to Amended and
Restated Credit Agreement dated as of May 14, 2001, Eleventh Amendment to
Amended and Restated Credit Agreement dated as of May 21, 2001, Twelfth
Amendment to Amended and Restated Credit Agreement dated as of June 4, 2001,
Thirteenth Amendment to Amended and Restated Credit Agreement dated as of June
15, 2001, Fourteenth Amendment to Amended and Restated Credit Agreement dated as
of June 26, 2001, Fifteenth Amendment to Amended and Restated Credit Agreement
dated as of July 6, 2001. Sixteenth Amendment to Amended and Restated Credit
Agreement dated as of July 13, 2001 ("SIXTEENTH AMENDMENT"), and Seventeenth
Amendment to Amended and Restated Credit Agreement dated as of October 4, 2001
("SEVENTEENTH AMENDMENT", which together with all the amendments enumerated
above, the "AMENDMENTS"; The Amended and Restated Credit Agreement, as amended
by the Amendments and from time to time hereafter amended, supplemented or
otherwise modified, the "CREDIT AGREEMENT"); and

         WHEREAS, the Borrower has requested and Lenders have agreed to make
certain additional modifications to the Credit Agreement (specifically, to the
Sixteenth Amendment and the Seventeenth Amendment) as hereinafter set forth,
subject to the conditions and terms contained herein.

         NOW THEREFORE, in consideration of the mutual conditions and agreements
set forth in the Credit Agreement and this Amendment, the Recitals set forth
above (which are incorporated herein by this reference thereto) and for other
good and valuable consideration, the

<PAGE>

receipt and sufficiency of which are hereby acknowledged, the parties hereto
hereby agree as follows:

         1. DEFINITIONS. Capitalized terms used in this Amendment, unless
otherwise defined herein, shall have the meaning ascribed to such terms in the
Credit Agreement.

         2. AMENDMENTS. Borrower has met or exceeded all requirements under
Section 3(C) of the Sixteenth Amendment in connection with the sale of Borrower
and has requested, and Agent and Lenders have agreed, to remove the restrictions
and requirements imposed on Borrower pursuant to the Amendments with respect to
any disposition or sale of the CIM Assets, PROVIDED, however, that (i) any such
disposition or sale (other than in connection with a sale of all or
substantially all of the assets or capital stock of Borrower and any
requirements associated therewith) shall continue to be subject to the consent
of Agent and Lenders in accordance with the terms of the Loan Documents and (ii)
the Net Proceeds of any such disposition or sale of CIM Assets shall be for an
amount not less than $3,100,000. Accordingly, the provisions of the Credit
Agreement relating to the sale of the CIM Assets appearing in the Section 3(B)
of the Sixteenth Amendment and Sections 2 and 3(A) of Seventeenth Amendment are
hereby stricken and deleted in their entirety.

         3. CONDITIONS. The effectiveness of this Amendment is subject to the
following conditions precedent (unless specifically waived in writing by Agent):

         A.       each Loan Party shall have executed and delivered this
                  Amendment, and such other documents and instruments as Agent
                  may require shall have been executed and/or delivered to
                  Agent;

         B.       All proceedings taken in connection with the transactions
                  contemplated by this Amendment and all documents, instruments
                  and other legal matters incident thereto shall be satisfactory
                  to Agent and its legal counsel; and

         C.       No Default or Event of Default shall have occurred and be
                  continuing.

         4. REPRESENTATIONS AND WARRANTIES. To induce Agent and Lenders to enter
into this Amendment, each Loan Party represents and warrants to Agent and
Lenders as follows:

         A.       The execution, delivery and performance of this Amendment has
                  been duly authorized by all requisite corporate action on the
                  part of each Loan Party and that this Amendment has been duly
                  executed and delivered by each Loan Party; and

         B.       Each of the representations and warranties set forth in
                  Section 5 of the Credit Agreement (other than those which, by
                  their terms, specifically are made as of certain date prior to
                  the date hereof) are true and correct in all material respects
                  as of the date hereof.

         5. SEVERABILITY. Any provision of this Amendment held by a court of
competent jurisdiction to be invalid or unenforceable shall not impair or
invalidate the remainder of this

<PAGE>

Amendment and the effect thereof shall be confined to the provision so held to
be invalid or unenforceable.

         6. REFERENCES. Any reference to the Credit Agreement contained in any
document, instrument or agreement executed in connection with the Credit
Agreement shall be deemed to be a reference to the Credit Agreement as modified
by this Amendment.

         7. COUNTERPARTS. This Amendment may be executed in one or more
counterparts, each of which shall constitute an original, but all of which taken
together shall be one and the same instrument.

         8. RATIFICATION. Each Loan Party hereby consents to the execution and
delivery of this Amendment. Each Loan Party hereby agrees that except as amended
hereby, the Credit Agreement and each of the other Loan Documents shall remain
in full force and effect in accordance with their respective terms. Each Loan
Party hereby ratifies and confirms its liabilities, obligations and agreements
under the Credit Agreement and each other Loan Document, all as amended by this
Amendment, and acknowledges that other than as specifically set forth herein,
Agent and Lenders do not waive, diminish or limit any term or condition
contained in the Credit Agreement or any of the other Loan Documents. Agent's
and each Lender's agreement to the terms of this Amendment or any other
amendment shall not be deemed to establish or create a custom or course of
dealing between Agent or Lenders, on the one hand, and any Loan Party, on the
other hand.

         9. FURTHER ASSURANCES AND FEES AND EXPENSES. Each Loan Party covenants
and agrees that it will at any time and from time to time do, execute,
acknowledge and deliver, or will cause to be done, executed, acknowledged and
delivered, all such further acts, documents and instruments as reasonably may be
required by Agent in order to effectuate fully the intent of this Amendment. The
Borrower shall pay all fees and expenses incurred in the preparation,
negotiation and execution of this Amendment, including, without limitation, the
fees and expenses of counsel for Agent and the Lenders.

                    Balance of Page Intentionally Left Blank
                             Signature Page Follows

<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Eighteenth
Amendment to be duly executed under seal and delivered by their respective duly
authorized officers on the date first written above.

<TABLE>
<S>                                                              <C>
UNIONTOOLS, INC., a Delaware corporation                         ACORN PRODUCTS, INC., a Delaware corporation

 /s/ John G. Jacob                                                /s/ John G. Jacob
-------------------------------------------------                -------------------------------------------------
By:  John G. Jacob                                               By:  John G. Jacob
   ----------------------------------------------                   ----------------------------------------------
Title: Vice President and Chief Financial Officer                Title: Vice President and Chief Financial Officer
      -------------------------------------------                      -------------------------------------------

HAWTHORNE TOOLS, INC., a Missouri corporation                    PINETREE TOOLS, INC., a Delaware corporation

 /s/ John G. Jacob                                                /s/ John G. Jacob
-------------------------------------------------                -------------------------------------------------
By:  John G. Jacob                                               By:  John G. Jacob
   ----------------------------------------------                   ----------------------------------------------
Title: Vice President and Chief Financial Officer                Title: Vice President and Chief Financial Officer
      -------------------------------------------                      -------------------------------------------

HELLER FINANCIAL, INC., as Agent and a Lender                    FLEET BUSINESS CREDIT CORP., formerly known as
                                                                 Sanwa Business Credit Corporation

/s/ Greg Reynolds                                                /s/ Mark D. Newlun
------------------------------------------------                 ------------------------------------------------
By: Greg Reynolds                                                By:  Mark D. Newlun
   ----------------------------------------------                   ----------------------------------------------
Title: Assistant Vice President                                  Title: Senior Vice President
      -------------------------------------------                      -------------------------------------------

FLEET CAPITAL CORPORATION                                        PNC BANK, NATIONAL ASSOCIATION

/s/ Mark D. Newlun                                               /s/ William C. Miles
------------------------------------------------                 -------------------------------------------------
By:  Mark D. Newlun                                              By: William C. Miles
   ----------------------------------------------                   ----------------------------------------------
Title: Senior Vice President                                     Title: Vice President
      -------------------------------------------                      -------------------------------------------

FIRSTAR BANK, N.A.                                               ARK CLO 2000-1 LIMITED

                                                                 By: Patriarch Partners, LLC
                                                                 Its: Attorney-in-fact

 /s/ Douglas W. Worden                                            /s/ Dennis Dolan
-------------------------------------------------                -------------------------------------------------
By: Douglas W. Worden                                            By:  Dennis Dolan
   ----------------------------------------------                   ----------------------------------------------
Title: Assistant Vice President                                  Title:   Authorized Signatory
      -------------------------------------------                      -------------------------------------------
</TABLE>

<PAGE>

                            CONSENT AND REAFFIRMATION

         The undersigned hereby (i) acknowledges receipt of a copy of the
foregoing Eighteenth Amendment to Amended and Restated Credit Agreement; (ii)
agrees to be bound thereby, as a participant under the credit facility evidenced
by said Amended and Restated Credit Agreement, and (iii) affirms that nothing
contained therein shall modify in any respect whatsoever the obligations of
undersigned to, or rights and remedies of, Agent and Lenders pursuant to the
terms of that certain Subordinated Participation Agreement (the "Subordination
Agreement") entered into as of the 28th day of October, 1999, by and among
Heller Financial, Inc. in its individual capacity ("Heller") and (if applicable
pursuant to Section 11.17 thereof) certain other "Lender(s)" under the Credit
Agreement (each, individually (including Heller), a "Seller" and collectively,
the "Sellers") and Heller Financial, Inc. in its capacity as Agent under the
Credit Agreement referred to below (in such capacity, together with its
successors in such capacity, the "Agent") and OCM Principal Opportunities Fund,
L.P. and TCW Special Credits, as general partner and/or investment manager of
the funds and accounts set forth on Schedule IA hereof (collectively, the
"Purchasers") and reaffirms that the Subordination Agreement is and shall
continue to remain in full force and effect. Although Purchasers have been
informed of the matters set forth herein and have acknowledged and agreed to
same, the execution and delivery by Purchasers of this Consent and Reaffirmation
does not create any obligation on the part of Agent and Lenders to inform
Purchasers of such matters in the future or to seek Purchaser's acknowledgment
or agreement to future amendments or waivers, and nothing herein shall create
such a duty.

        Balance of Page Intentionally Left Blank - Signature Page Follows

<PAGE>

         IN WITNESS WHEREOF, the undersigned has executed this Consent and
Reaffirmation on and as of the date of such Eighteenth Amendment.

                               OCM PRINCIPAL OPPORTUNITIES FUND, L.P.

                               By:  Oaktree Capital Management, LLC
                               Its:  General Partner

                               By:  /s/ Kenneth Liang
                                    --------------------------------------------
                                      Kenneth Liang
                                      Managing Director

                               By: /s/ Vincent J. Cebula
                                    --------------------------------------------
                                      Vincent J. Cebula
                                      Managing Director

                               TCW SPECIAL CREDITS, as general partner and
                               investment manager of the funds and accounts set
                               forth on Schedule I

                               By:  TCW Asset Management Company
                               Its:  Managing General Partner

                               By:  /s/ Richard Masson
                                    --------------------------------------------
                                     Richard Masson
                                     Authorized Signatory

                               By:  /s/ Kenneth Liang
                                    --------------------------------------------
                                     Kenneth Liang
                                     Authorized Signatory

<PAGE>

                    SCHEDULE IA TO CONSENT AND REAFFIRMATION

TCW SPECIAL CREDITS FUND IIIB

TCW SPECIAL CREDITS TRUST IIIB

THE COMMON FUND FOR BOND INVESTMENTS, INC.

DELAWARE STATE EMPLOYEES' RETIREMENT FUND

WEYERHAEUSER COMPANY MASTER RETIREMENT TRUST (TCW)

TCW SPECIAL CREDITS TRUST

TCW SPECIAL CREDITS TRUST IV

TCW SPECIAL CREDITS TRUST IV-A

TCW SPECIAL CREDITS FUND IV

TCW SPECIAL CREDITS PLUS FUND<PAGE>
                                                                    Exhibit 4.12

            VOID AFTER 5:00 P.M., NEW YORK TIME ON FEBRUARY 27, 2007
               WARRANT TO PURCHASE _______ SHARES OF COMMON STOCK

  ----------------------------------------------------------------------------
                        WARRANT TO PURCHASE COMMON STOCK

                                       OF

                            EMPYREAN BIOSCIENCE, INC.

 ------------------------------------------------------------------------------

                   THIS WARRANT AND THE SHARES OF COMMON STOCK
                     ISSUABLE PURSUANT TO THIS WARRANT HAVE
              NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
                  AS AMENDED (THE "ACT"), AND MAY NOT BE SOLD,
                     PLEDGED OR OTHERWISE TRANSFERRED UNLESS
                  REGISTERED UNDER THE ACT OR AN EXEMPTION FROM
                         SUCH REGISTRATION IS AVAILABLE.

         FOR VALUE RECEIVED, Empyrean Bioscience, Inc., a Delaware corporation
(the "Company"), grants the following rights to ___________ ("Holder'):

                                   ARTICLE I.
                                   DEFINITIONS

         As used herein, the following terms shall have the following meanings,
unless the context shall otherwise require:

                  (a) "Common Stock" shall mean the common stock, $.0001 par
value, of the Company.

                  (b) "Corporate Office" shall mean the office of the Company
(or its successor) at which its principal business shall be administered at any
particular time.

                  (c) "Exercise Date" shall mean any date upon which the Holder
shall give the Company a Notice of Exercise.

                  (d) "Exercise Price" shall mean the price to be paid to the
Company for each share of Common Stock to be purchased upon exercise of this
Warrant in accordance with the terms hereof which shall be $0.031.

                  (e) "Expiration Date" shall mean 5:00 p.m. (New York time) on
February 27, 2007.

                  (f) "Fair Market Value" of a share of Common Stock as of a
particular date (the "Determination Date") shall mean:

                           (1) If the Company's Common Stock is traded on an
exchange or is quoted on the National Association of Securities Dealers, Inc.
Automated Quotation ("NASDAQ") National Market System or the NASDAQ SmallCap
Market, then the closing or last sale price, respectively, reported for the

                                       1
<PAGE>

last business day immediately preceding the Determination Date.

                           (2) If the Company's Common Stock is not traded on an
exchange or on the NASDAQ National Market System or the NASDAQ SmallCap Market
but is traded on the NASD OTC Bulletin Board, then the mean of the closing bid
and asked prices reported for the last business day immediately preceding the
Determination Date.

                           (3) Except as provided in clause (4) below, if the
Company's Common Stock is not publicly traded, then as the Holder and the
Company agree or in the absence of agreement by arbitration in accordance with
the rules then standing of the American Arbitration Association, before a single
arbitrator to be chosen from a panel of persons qualified by education and
training to pass on the matter to be decided.

                           (4) If the Determination Date is the date of a
liquidation, dissolution or winding up, or any event deemed to be a liquidation,
dissolution or winding up pursuant to the Company's charter, then all amounts to
be payable per share to holders of the Common Stock pursuant to the charter in
the event of such liquidation, dissolution or winding up, plus all other amounts
to be payable per share in respect of the Common Stock in liquidation under the
charter, assuming for the purposes of this clause (4) that all of the shares of
Common Stock then issuable upon exercise of all of the Warrants are outstanding
at the Determination Date.

                  (g) "SEC" shall mean the United States Securities and Exchange
Commission.

                  (h) "Transfer Agent" shall mean the Company's transfer agent
or its authorized successor.

                  (i) "Underlying Shares" shall mean the shares of Common Stock
issuable upon exercise of the Warrant.

                                   ARTICLE 2.
                             EXERCISE AND AGREEMENTS

         2.1 EXERCISE OF WARRANT. This Warrant shall entitle Holder to purchase
up to ________ shares of Common Stock (the "Shares") at the Exercise Price. This
Warrant shall be exercisable at any time and from time to time on or after
February 28, 2002 and prior to the Expiration Date (the "Exercise Period"). This
Warrant and the right to purchase shares of Common Stock hereunder shall expire
and become void at the Expiration Date.

         2.2 MANNER OF EXERCISE.

                  (a) Holder may exercise this Warrant at any time and from time
to time during the Exercise Period, in whole or in part (but not in
denominations of fewer than 10,000 shares, except upon an exercise of this
Warrant with respect to the remaining balance of shares purchasable hereunder at
the time of exercise), by delivering to the Company (i) a duly executed Notice
of Exercise in substantially the form attached as Appendix 1 hereto and (ii)
payment in the form of:

                           (1) a wire transfer or bank cashiers or certified
check payable to the order of the Company for the aggregate Exercise Price of
the shares being purchased;

                                       2
<PAGE>

                           (2) delivery of Warrants, Common Stock and/or Common
Stock receivable upon exercise of the Warrants in accordance with Section (b)
below; or

                           (3) a combination of any of the foregoing methods,
for the number of Common Shares specified in such form (as such exercise number
shall be adjusted to reflect any adjustment in the total number of shares of
Common Stock issuable to the holder per the terms of this Warrant) and the
holder shall thereupon be entitled to receive the number of duly authorized,
validly issued, fully-paid and non-assessable shares of Common Stock determined
as provided herein.

                  (b) Notwithstanding any provisions herein to the contrary, if
the Fair Market Value of one share of Common Stock is greater than the Exercise
Price (at the date of calculation as set forth below), in lieu of exercising
this Warrant for cash, upon consent of the Company, the holder may elect to
receive shares equal to the value (as determined below) of this Warrant (or the
portion thereof being cancelled) by surrender of this Warrant at the principal
office of the Company together with the properly endorsed Notice of Exercise in
which event the Company shall issue to the holder a number of shares of Common
Stock computed using the following formula:

                          X=Y (A-B)
                               ---
                                 A
                          --------

                  Where   X=  the number of shares of Common Stock to be issued
                              to the holder

                          Y=  the number of shares of Common Stock purchasable
                              under the Warrant or, if only a portion of the
                              Warrant is being exercised, the portion of the
                              Warrant being exercised (at the date of such
                              calculation)

                          A=  the Fair Market Value of one share of the
                              Company's Common Stock (at the date of such
                              calculation)

                          B=  Exercise Price (as adjusted to the date of such
                              calculation)

                  (c) From time to time upon exercise of this Warrant, in whole
or part, in accordance with its terms, the Company will deliver stock
certificates to the Holder representing the number of shares of Common Stock
being purchased pursuant to such exercise, subject to adjustment as described
herein.

                  (d) Promptly following any exercise of this Warrant, if the
Warrant has not been fully exercised and has not expired, the Company will
deliver to the Holder a new Warrant for the balance of the shares of Common
Stock covered hereby.

         2.3 TERMINATION. All rights of the Holder in this Warrant, to the
extent they have not been exercised, shall terminate on the Expiration Date.

         2.4 NO RIGHTS PRIOR TO EXERCISE. Prior to its exercise pursuant to
Section 2.2 above, this Warrant shall not entitle the Holder to any voting or
other rights as a holder of shares of Common Stock.

         2.5 ADJUSTMENTS. In case of any reclassification, capital
reorganization, stock dividend or other change of outstanding shares of Common
Stock, or in case of any consolidation or merger of the Company with or into
another corporation (other than a consolidation or merger in which the Company
is the continuing corporation and which does not result in any reclassification,
capital reorganization, stock

                                       3
<PAGE>

dividend or other change of outstanding shares or Common Stock) or in case of
any sale or conveyance to another corporation of the property of the Company as,
or substantially as, an entirety (other than a sale/leaseback, mortgage or other
financing transaction), the Company shall cause effective provision to be made
so that the Holder shall have the right thereafter, by exercising this Warrant,
to purchase the kind and number of shares of stock or other securities or
property (including cash) receivable upon such reclassification, capital
reorganization, stock dividend or other change, consolidation, merger, sale or
conveyance as the Holder would have been entitled to receive had the Holder
exercised this Warrant in full immediately before such reclassification, capital
reorganization, stock dividend or other change, consolidation, merger, sale or
conveyance. Any such provision shall include provision for adjustments that
shall be as nearly equivalent as may be practicable to the adjustments provided
for in this Section 2.5. The foregoing provisions shall similarly apply to
successive reclassifications, capital reorganizations, stock dividends and other
changes of outstanding shares of Common Stock and to successive consolidations,
mergers, sales or conveyances.

         2.6 FRACTIONAL SHARES. No fractional shares of Common Stock shall be
issuable upon exercise or conversion of this Warrant and the number of shares to
be issued shall be rounded down to the nearest whole share. If a fractional
share interest arises upon any exercise or conversion of the Warrant, the
Company shall eliminate such fractional share interest by paying Holder the
amount computed by multiplying the fractional interest by the closing bid price
of a full share of Common Stock on the date of the Notice of Exercise.

                                   ARTICLE 3.
                  REPRESENTATIONS AND COVENANTS OF THE COMPANY

         3.1 REPRESENTATIONS AND WARRANTIES. The Company hereby represents and
warrants to the Holder as follows:

                  (a) All shares of Common Stock which may be issued upon the
exercise of the purchase right represented by this Warrant shall, upon issuance,
be duly authorized, validly issued, fully-paid and nonassessable, and free of
any liens and encumbrances except for restrictions on transfer provided for
herein or under applicable federal and state securities laws, and not subject to
any pre-emptive rights.

                  (b) The Company is a corporation duly organized and validly
existing under the laws of the State of Delaware, and has the full power and
authority to issue this Warrant and to comply with the terms hereof. The
execution, delivery and performance by the Company of its obligations under this
Warrant, including, without limitation, the issuance of the shares of Common
Stock upon any exercise of the Warrant have been duly authorized by all
necessary corporate action. This Warrant has been duly executed and delivered by
the Company and is a valid and binding obligation of the Company, enforceable in
accordance with its terms, except as enforcement may be limited by applicable
bankruptcy, insolvency, reorganization or similar laws affecting enforceability
of creditors' rights generally and except as the availability of the remedy of
specific enforcement, injunctive relief or other equitable relief is subject to
the discretion of the court before which any proceeding therefore may be
brought.

                  (c) The Company is not subject to or bound by any provision of
any certificate or articles of incorporation or by-laws, mortgage, deed of
trust, lease, note, bond, indenture, other instrument or agreement, license,
permit, trust, custodianship, other restriction or any applicable provision of
any law, statute, rule, regulation, judgment, order, writ, injunction or decree
of any court, governmental body, administrative agency or arbitrator which could
prevent or be violated by or under which there would be a default (or right of
termination) as a result of the execution, delivery and performance by the
Company of this Warrant.

                                       4
<PAGE>

                                   ARTICLE 4.
                           SECURITIES LAW COMPLIANCE.

         The shares of Common Stock will be acquired for Holder's own account
for investment and not with a view to, or for resale in connection with, any
distribution of the shares within the meaning of the Securities Act of 1933.
Holder acknowledges that it is aware that the issuance of the shares of Common
Stock upon exercise of this Warrant have not been registered pursuant to the
Securities Act of 1933 (the "Act"), nor is it intended that they be registered
and the Holder has no right to require that they be registered, under the Act or
under any state securities laws. The Holder agrees that the shares of Common
Stock may not be sold in the absence of registration unless such sale is exempt
from registration under the Act and any applicable state securities laws. The
Holder also acknowledges that he shall be responsible for compliance with all
conditions on transfer imposed by any Commissioner of Securities of any state
and for any expenses incurred by the Company for legal or accounting services in
connection with reviewing such proposed transfer or issuing opinions in
connection therewith. The certificate for the shares of Common Stock shall bear
the following restrictive legend:

         THE SECURITIES EVIDENCED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
         UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OF THE UNITED STATES OF
         AMERICA (THE "ACT") OR THE SECURITIES LAWS OF ANY STATE OF THE UNITED
         STATES ("STATE ACT"). THESE SECURITIES HAVE BEEN ACQUIRED FOR
         INVESTMENT AND MAY NOT BE OFFERED, SOLD, PLEDGED, HYPOTHECATED, OR
         OTHERWISE TRANSFERRED FOR VALUE, DIRECTLY OR INDIRECTLY, IN THE ABSENCE
         OF AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE ACT
         AND COMPLIANCE WITH APPLICABLE STATE ACTS, OR PURSUANT TO AN EXEMPTION
         FROM REGISTRATION UNDER THE ACT AND UNDER APPLICABLE STATE ACTS, THE
         AVAILABILITY OF WHICH IS ESTABLISHED TO THE SATISFACTION OF THE
         COMPANY.

         If (but without any obligation to do so under this Warrant) the Company
proposes to register (including for this purpose a registration effected by the
Company for shareholders other than the Holder) any of its stock or other
securities under the Act in connection with the public offering of such
securities solely for cash (other than a registration relating solely to the
sale of securities to participants in a Company stock plan, or a registration on
any form which does not include substantially the same information as would be
required to be included in a registration statement covering the issuance of the
Underlying Shares, or a registration of an offering of securities, the
underwriter of which objects to registration of additional securities), the
Company shall, at such time, promptly give to Holder written notice of such
registration. Upon the written request of the Holder given within twenty days
after mailing of such notice by the Company, the Company shall cause to be
registered under such registration statement such Underlying Shares as the
Holder has requested to be registered.

                                   ARTICLE 5.
                                 MISCELLANEOUS.

         5.1 TRANSFER. This Warrant may not be transferred or assigned, in whole
or in part, at any time, except in compliance with applicable federal and state
securities laws by the transferor and the transferee (including, without
limitation, the delivery of an investment representation letter and a legal
opinion reasonably satisfactory to the Company), provided that this Warrant may
not be transferred or assigned such that either the Holder or any transferee
will, following such transfer or assignment, hold a Warrant for the right to
purchase fewer than 5,000 shares of Common Stock.

                                       5
<PAGE>

         5.2 TRANSFER PROCEDURE. Subject to the provisions of Section 5.1,
Holder may transfer or assign this Warrant by giving the Company notice setting
forth the name, address and taxpayer identification number of the transferee or
assignee, if applicable (the "Transferee") and surrendering this Warrant to the
Company for reissuance to the Transferee (and the Holder, in the event of a
transfer or assignment of this Warrant in part). (Each of the persons or
entities in whose name any such new Warrant shall be issued is herein referred
to as a Holder").

         5.3 LOSS, THEFT, DESTRUCTION OR MUTILATION. If this Warrant shall
become mutilated or defaced or be destroyed, lost or stolen, the Company shall
execute and deliver a new Warrant in exchange for and upon surrender and
cancellation of such mutilated or defaced Warrant or, in lieu of and in
substitution for such Warrant so destroyed, lost or stolen, upon the Holder
filing with the Company evidence to it that such Warrant has been so mutilated,
defaced, destroyed, lost or stolen. However, the Company shall be entitled, as a
condition to the execution and delivery of such new Warrant, to demand indemnity
satisfactory to it and payment of the expenses and charges incurred in
connection with the delivery of such new Warrant. Any Warrant so surrendered to
the Company shall be canceled.

         5.4 NOTICES. All notices and other communications from the Company to
the Holder or vice versa shall be deemed delivered and effective when given
personally, by facsimile transmission and confirmed in writing or mailed by
first-class registered or certified mail, postage prepaid at such address and/or
facsimile number as may have been furnished to the Company or the Holder, as the
case may be, in writing by the Company or the Holder from time to time.

         5.5 WAIVER. This Warrant and any term hereof may be changed, waived, or
terminated only by an instrument in writing signed by the party against which or
whom enforcement of such change, waiver, discharge or termination is sought.

         5.6 GOVERNING LAW. This Warrant shall be governed by and construed in
accordance with the laws of the State of Delaware, without giving effect to its
principles regarding conflicts of law.

Dated:                                Empyrean Bioscience, Inc.
      ----------------------

Attest:                               By:
        --------------------              --------------------------------------
                                          Richard C. Adamany, President & CEO

                                       6
<PAGE>

                                                                      Appendix 1
                               NOTICE OF EXERCISE

         TO:      EMPYREAN BIOSCIENCE, INC.

The undersigned, pursuant to the provisions set forth in the attached Warrant,
hereby irrevocably elects to purchase (check applicable box):

___      ________ shares of the Common Stock covered by such Warrant; or

___ the maximum number of shares of Common Stock covered by such Warrant
pursuant to the cashless exercise procedure set forth in Section 2.

The undersigned herewith makes payment of the full purchase price for such
shares at the price per share provided for in such Warrant, which is
$___________. Such payment takes the form of (check applicable box or boxes):

___      $__________ in lawful money of the United States; and/or

___ the cancellation of such portion of the attached Warrant as is exercisable
for a total of _______ shares of Common Stock (using a Fair Market Value of
$_______ per share for purposes of this calculation); and/or

___ the cancellation of such number of shares of Common Stock as is necessary,
in accordance with the formula set forth in Section 2.2 (b), to exercise this
Warrant with respect to the maximum number of shares of Common Stock
purchaseable pursuant to the cashless exercise procedure set forth in Section
2.2 (b).

The undersigned requests that the certificates for such shares be issued in the
name of, and delivered to ____________________ _________ whose address is
_________________________________________________________________.

The undersigned hereby confirms and acknowledges that the shares of Common Stock
to be issued upon this exercise are being acquired solely for the account of the
undersigned and not as a nominee for any other party, and for investment, and
that the undersigned will not offer, sell or otherwise dispose of any such
shares of Common Stock except under circumstances that will not result in a
violation of the Securities Act of 1933, as amended, or any applicable state
securities laws.

Dated:
      ----------------------          ------------------------------------------
                                      (Signature must conform to name of Holder
                                      as specified on the face of the Warrant)

                                      ------------------------------------------
                                      (Address)

                                       7

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