SPL Set ID: 9970e495-29c4-47b8-a3e9-c9b365abe400

Sirolimus is an mTOR inhibitor immunosuppressive agent. Sirolimus is a macrocyclic lactone produced by Streptomyces hygroscopicus . The chemical name of sirolimus (also known as rapamycin) is (3 S ,6 R ,7 E ,9 R ,10 R ,12 R ,14 S ,15 E ,17 E ,19 E ,21 S ,23 S ,26 R ,27 R ,34a S )-9,10,12,13,14,21,22,23,24,25,26,27,32,33,34,34a-hexadecahydro-9,27-dihydroxy-3-[(1 R )-2-[(1 S ,3 R ,4 R )-4-hydroxy-3-methoxycyclohexyl]-1-methylethyl]-10,21-dimethoxy-6,8,12,14,20,26-hexamethyl-23,27-epoxy-3 H -pyrido[2,1-c][1,4] oxaazacyclohentriacontine-1,5,11,28,29 (4 H ,6 H ,31 H )-pentone. Its molecular formula is C 51 H 79 NO 13 and its molecular weight is 914.2. The structural formula of sirolimus is illustrated as follows. Sirolimus is a white to off-white powder and is freely soluble in chloroform, acetone, and acetonitrile, insoluble in water. Sirolimus tablets are available as a grey to greenish grey colored film-coated, round shaped beveled edge standard convex tablet containing 0.5 mg sirolimus; as a white to off-white colored film-coated, round shaped beveled edge standard convex tablet containing 1 mg sirolimus; and as a yellow to orange yellow colored film-coated, round shaped beveled edge standard convex tablet containing 2 mg sirolimus. Sirolimus tablets, 2 mg contains FD&C yellow No. 6 as a color additive. The inactive ingredients in sirolimus tablets include: croscarmellose sodium, dl -alpha tocopherol, edetate disodium, glyceryl behenate, hypromellose, lactose monohydrate, microcrystalline cellulose, poloxamer 188, polyethylene glycol, sucrose and titanium dioxide. Additionally, the 0.5 mg dosage strength also contains: iron oxide black, iron oxide yellow and iron oxide red and the 2 mg dosage strength also contains: D&C yellow #10, FD&C yellow #6 and FD&C blue #2. structure