All are alkylating agents, except
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.
5-Fluorouracil
Melphalan
Cyclophosphamide
Chlorambucil
Chemotherapy: General Principles