Drostanolone Propionate Synonyms: Masteron; Dromostanolone Propionate; masterone propionate CAS: 521-12-0 EINECS: 208-303-1 Formulae hypotheticae: C23H36O3 Molecular weight:360.53 Assay: 99% min. Character: Album pulveris crystallini. Consuetudinem: pharmaceutical material, Steroid hormone, Anabolin. Sicut masculus hormona et anabolic hormones.