noun Pharmacology.
- a yellow, crystalline, water-insoluble powder, C5H4N4S, used in the treatment of leukemia.
noun
- a drug used in the treatment of leukaemia. Formula: C 5 H 4 N 4 S
n.
- A purine analog that acts as an antimetabolite by interfering with purine synthesis, used primarily in the treatment of acute leukemia.