Mercaptopurine is: (A) Purine analogue, (B) Nucleoside analogue, (C) Pyrimidine analogue, (D) Anti tumor antibiotics
Answer is A. Ref: Katzung, 14th ed. pg. 960; KDT, 6th ed. pg. 820* Mercaptopurine is synthetic purine used in cancer chemotherapy.* Use: Childhood acute leukemia.