The chemical Nandrolone has a designated molecular formula of C18H26O2 and a molecular weight of 274.404 g/mol. Synonyms may include: U 2410, EINECS 207-101-0, 4-Estren-17beta-ol-3-one, Estr-4-en-3-one, 17beta-hydroxy-, Estr-4-en-3-one, 17-hydroxy-, (17beta)-, HSDB 3368, 17-beta-Hydroestr-4-en-3-one, 17beta-Hydroxy-4-estren-3-one, (17-beta)-17-Hydroxyestr-4-en-3-one (ChemID).