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| | OMB APPROVAL |
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| |OMB Number: 3235-0101|
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| |Expires: December 31, 2006|
| UNITED STATES |--------------------------------|
| SECURITIES AND EXCHANGE COMMISSION |Estimated average burden |
| Washington, D.C. 20549 |hours per response...........2.0|
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| FORM 144 ---------------------------------|
| | SEC USE ONLY |
| NOTICE OF PROPOSED SALE OF SECURITIES |--------------------------------|
| PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933 |DOCUMENT SEQUENCE NO. |
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| ATTENTION: Transmit for filing 3 copies of this form concurrently |CUSIP NUMBER |
| with either placing an order with a broker to execute sale or |--------------------------------|
| executing a sale directly with a market maker |WORK LOCATION |
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| 1(a) NAME OF ISSUER (Please type or print): (b) IRS IDENT. NO.: (c) S.E.C. FILE NO.: |
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| Bioenvision, Inc. 13-4025875 001-31787 |
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| 1(d) ADDRESS OF ISSUER ( STREET, CITY, STATE, ZIP CODE): (e) TELEPHONE |
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|345 Park Avenue, 41st Floor, New York, NY 10154 AREA CODE: 212 NUMBERS: 750-6700 |
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| 2(a) NAME OF PERSON FOR WHOSE ACCOUNT (b) IRS IDENT. (c) RELATIONSHIP TO (d) ADDRESS (STREET, CITY, STATE, ZIP CODE): |
| THE SECURITIES ARE TO BE SOLD: NO.: ISSUER: |
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| Thomas Scott Nelson Director 345 Park Avenue, 41st Floor, New York, NY 10154 |
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| INSTRUCTION: The person filing this notice should contact the issuer to obtain the |
| I.R.S. identification Number and the S.E.C. File Number. |
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| (b) Name and |
| Address of Each SEC USE ONLY (g) Name |
| Broker Through whom (c) Number (e) Number of Each |
| the Securities Are ------------ of Shares or of Shares or (f) Approx- Securities|
| To Be Offered or Broker- Other Units (d) Agggregate Other Units imate Date Exchange |
|3(a) Title of the Each Market Maker Dealer To Be Sold Market Value Outstanding of Sale (See (See |
|Class of Securities who Is Acquiring File Number (See instr. (See instr. (See instr. instr. 3(f)) instr. |
|To Be Sold the Securities 3(c)) 3(d)) 3(e)) (MO. DAY YR.) 3(g)) |
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| Common Stock Smith Barney 90,000 $764,100 41,001,846 March 7, 2006 Nasdaq
| 388 Greenwich Street (based upon the (as of March
| New York, NY 10013 closing price on 2, 2006)
March 2, 2006)
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| INSTRUCTIONS: |
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| 1. (a) Name of issuer |
| (b) Issuer's I.R.S. Identification Number |
| (c) Issuer's S.E.C. file number, if any |
| (d) Issuer's address, including zip code |
| (e) Issuers's telephone number, including area code |
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| 2. (a) Name of person for whose account the securities are to be sold |
| (b) Such person's I.R.S. identification number, if such person is an entity |
| (c) Such person's relationship to the issuer (e.g., officer, director, 10% stockholder, or member of immediate family of |
| any of the foregoing) |
| (d) Such person's address, including zip code |
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| 3. (a) Title of the class of securities to be sold |
| (b) Name and Address of each broker through whom the securities are intended to be sold |
| (c) Number of shares or other units to be sold (if debt securities, give the aggregate face amount) |
| (d) Aggregate market value of the securities to be sold as of a specified date within 10 days prior to the filing of this |
| notice |
| (e) Number of shares or other units of the class outstanding, or if debt securities the face amount thereof outstanding, as |
| shown by the most recent report or statement published by the issuer |
| (f) Approximate date on which the securities are to be sold |
| (g) Name of each securities exchange, if any, on which the securities are intended to be sold |
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| TABLE I --SECURITIES TO BE SOLD |
| Furnish the following information with respect to the acquisition of the securities to be sold |
| and with respect to the payment of all or any part of the purchase price or other consideration therefor: |
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| Name of Person |
| from Whom Acquired |
| (if gift, also |
| Date you Nature of Acquisition give date donor Amount of Securities Date of Nature of |
| Title of the Class Acquired Transaction acquired) Acquired Payment Payment |
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|Common Stock 01/31/05 Exercise of options Bioenvision, Inc. 170,828 01/31/05 Cashless exercise
of options
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| INSTRUCTIONS: |
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| 1. If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the |
| table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other |
| obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was |
| discharged in full or the last installment paid. |
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| 2. If within two years after the acquisition of the securities the person for whose account they are to be sold had any short |
| positions, put or other option to dispose of securities referred to in paragraph (d)(3) of Rule 144, furnish full |
| information with respect thereto. |
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| TABLE II -- SECURITIES SOLD DURING THE PAST 3 MONTHS |
| Furnish the following information as to all securities of the issuer sold |
| during the past 3 months by the person for whose account the securities are to be sold. |
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| Date of |
| Name and Address of Seller Title of Securities Sold Sale Amount of Securities Sold Gross Proceeds |
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| REMARKS: |
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| INSTRUCTIONS: ATTENTION: |
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| See the definition of "person" in paragraph (a) of Rule 144. The person for whose account the securities to which this notice |
| Information is to be given not only as to the person for whose relates are to be sold hereby represents by signing this notice |
| account the securities are to be sold but also as to all other that he does not know any material adverse information in regard |
| persons included in that definition. In addition, information to the current and prospective operations of the Issuer of the |
| shall be given as to sales by all persons whose sales are securities to be sold which has not been publicly disclosed. |
| required by paragraph (e) of Rule 144 to be aggregated with |
| sales for the account of the person filing this notice. |
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| March 6, 2006 /s/ Thomas Scott Nelson |
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| DATE OF NOTICE (SIGNATURE) |
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| The notice shall be signed by the person for whose account the securities are to be sold. At least one copy of the notice shall |
| be manually signed. Any copies not manually signed shall bear typed or printed signatures |
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