The chemical Rubitecan has a designated molecular formula of C20H15N3O6 and a molecular weight of 393.355 g/mol. Synonyms may include: 9-Nitrocamptothecin, RFS 2000, 9-NC, 9NC, 4-Ethyl-4-hydroxy-9-nitro-1H-pyrano(3',4':6,7)indolizino(1,2-b)quinoline-3,14(4H,12H)-dione, Camptogen, Nitrocamptothecin, Orathecin, UNII-H19C446XXB (ChemID). Rubitecan has been assigned a MeSH pharmacological action of: Antineoplastic, Topoisomerase I Inhibitor.