All are alkylating agents, except: (A) 5-Fluorouracil, (B) Melphalan, (C) Cyclophosphamide, (D) Chlorambucil
Answer is A. Ans. (A) 5-Fluorouracil(Ref: Katzung 11th/e p945, KDT 8th/e p918-919)5-Fluorouracil is an antimetabolite whereas melphalan, cyclophosphamide and chlorambucil are alkylating agents.