UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 VioQuest Pharmaceuitcals, Inc. ------------------------------ Common Stock, par value $0.001 per share (Title of Class of Securities) ------------------------------ 927625103 --------- CUSIP Number December 1, 2004 ------------------------------------ (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: |_| Rule 13d-1(b) |X| Rule 13d-1(c) |_| Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). Continued on following pages Page 1 of 5 Pages 37 SCHEDULE 13G CUSIP No. 927625103 Page 2 of 5 -------------------------------------------------------------------------------- 1 Names of Reporting Persons I.R.S. Identification Nos. of above persons (entities only) LINDSAY A. ROSENWALD, M.D. -------------------------------------------------------------------------------- 2 Check the Appropriate Box If a Member of a Group * a. |_| b. |_| -------------------------------------------------------------------------------- 3 SEC Use Only -------------------------------------------------------------------------------- 4 Citizenship or Place of Organization UNITED STATES -------------------------------------------------------------------------------- 5 Sole Voting Power Number of 990,678 Shares ---------------------------------------------------- Beneficially 6 Shared Voting Power Owned By 0 Each ---------------------------------------------------- Reporting 7 Sole Dispositive Power Person 990,678 With ---------------------------------------------------- 8 Shared Dispositive Power 0 ------------------------------------------------------------------------------- 9 Aggregate Amount Beneficially Owned by Each Reporting Person 990,678 ------------------------------------------------------------------------------- 10 Check Box If the Aggregate Amount in Row (9) Excludes Certain Shares * |_| ------------------------------------------------------------------------------- 11 Percent of Class Represented By Amount in Row (9) 5.5% ------------------------------------------------------------------------------- 12 Type of Reporting Person * IN ------------------------------------------------------------------------------- * see instructions before filling out CUSIP No. 927625103 Page 3 of 5 Item 1(a) Name of Issuer: VioQuest Pharmaceuticals, Inc.. (the "Issuer") Item 1(b) Address of the Issuer's Principal Executive Offices: 130 West 42nd Street 12th Floor New York, NY 10036 Item 2(a) Name of Person Filing: Lindsay A. Rosenwald, M.D. (the "Reporting Person"). Item 2(b) Address of Principal Business Office or, if None, Residence: c/o Paramount BioCapital Investments, LLC 787 Seventh Avenue, 48th Floor New York, NY 10036 Item 2(c) Citizenship: The Reporting Person is a citizen of the United States. Item 2(d) Title of Class of Securities: Common Stock (the "Shares"). Item 2(e) CUSIP Number: 927625103 Item 3. If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a: This Item 3 is not applicable. Item 4. Ownership: Item 4(a) Amount Beneficially Owned: All shares held directly by Reporting Person and consist of (i) 887,807 Shares and (ii) warrants to purchase 102,871 Shares. Reporting Person became a 5% owner of a class of securities of the Issuer on December 1, 2004. Item 4(b) Percent of Class: See Item 11 of the cover page. CUSIP No. 927625103 Page 4 of 5 Item 4(c) Number of shares as to which such person has: (i) Sole power to vote or direct the vote: Please see Item 5 of the cover page. (ii) Shared power to vote or to direct the vote Please see Item 6 of the cover page. (iii) Sole power to dispose or to direct the disposition of Please see Item 7 of the cover page. (iv) Shared power to dispose or to direct the disposition of Please see Item 8 of the cover page. Item 5. Ownership of Five Percent or Less of a Class: This Item 5 is not applicable. Item 6. Ownership of More than Five Percent on Behalf of Another Person: This Item 6 is not applicable. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company: This Item 7 is not applicable. Item 8. Identification and Classification of Members of the Group: This Item 8 is not applicable. Item 9. Notice of Dissolution of Group: This Item 9 is not applicable. Item 10. Certification: By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. Page 5 of 5 SIGNATURES After reasonable inquiry and to the best of my knowledge and belief, the undersigned certifies that the information set forth in this statement is true, complete and correct. February 10, 2005 /s/ Lindsay A. Rosenwald -------------------------- Lindsay A. Rosenwald, M.D.