The chemical Rapamycin has a designated molecular formula of C51H79NO13 and a molecular weight of 914.187 g/mol. Synonyms may include: Sirolimus, Antibiotic AY 22989, AY 22989, NSC 226080, Rapamune, (-)-Rapamycin, SILA 9268A, HSDB 7284, CCRIS 9024, UNII-W36ZG6FT64, Rapammune, Wy 090217, Supralimus, Cypher, RAPA, EC 610-965-5, DE-109 (ChemID). Rapamycin has been assigned a MeSH pharmacological action of: Antibacterial, Antineoplastic, Antifungal, Immunosuppresant.