Exhibit 4.3 AGREEMENT TO AMEND WARRANT This Agreement is dated as of July 17, 2006, by and between Knoll Capital Management, L.P. ("Knoll") and Alfacell Corporation (the "Company"). The undersigned hereby agree as follows: 1. In connection with the...Amend Warrant • July 20th, 2006 • Alfacell Corp • Biological products, (no disgnostic substances)
Contract Type FiledJuly 20th, 2006 Company Industry
Exhibit 4.5 AGREEMENT TO AMEND WARRANT This Agreement is dated as of July 17, 2006, by and between SF Capital Partners, Ltd. ("SF Capital") and Alfacell Corporation (the "Company"). The undersigned hereby agree as follows: 1. In connection with the...Amend Warrant • July 20th, 2006 • Alfacell Corp • Biological products, (no disgnostic substances)
Contract Type FiledJuly 20th, 2006 Company Industry