SPL Set ID: c1e05c21-a411-4493-80de-ede373632475

Temozolomide is an alkylating drug. The chemical name of temozolomide is 3,4-dihydro-3-methyl-4-oxoimidazo[5,1-d]- as -tetrazine-8-carboxamide. The structural formula of temozolomide is: The material is a white to light tan or light pink powder with a molecular formula of C 6 H 6 N 6 O 2 and a molecular weight of 194.15. The molecule is stable at acidic pH (<5) and labile at pH >7; hence temozolomide capsules, USP can be administered orally. The prodrug, temozolomide, is rapidly hydrolyzed to the active 5-(3-methyltriazen-1-yl) imidazole-4-carboxamide (MTIC) at neutral and alkaline pH values, with hydrolysis taking place even faster at alkaline pH. Each capsule for oral use contains either 5 mg, 20 mg, 100 mg, 140 mg, 180 mg, or 250 mg of temozolomide, USP. The inactive ingredients for temozolomide capsules, USP are: lactose anhydrous, sodium starch glycolate, tartaric acid, and stearic acid. The capsule shell contains gelatin, titanium dioxide, and sodium lauryl sulfate. The imprinting ink contains shellac, dehydrated alcohol, butyl alcohol, propylene glycol, strong ammonia solution, FD&C Blue # 1 Aluminum Lake (5 mg, 140 mg), yellow iron oxide (5 mg, 20 mg, 100 mg), red iron oxide (100 mg, 180 mg), titanium dioxide (100 mg, 140 mg), potassium hydroxide (100 mg, 250 mg) and black iron oxide (250 mg). spl-temozolomide-structure