Synonyms: primobolone;1(5a)-androsten-1beta-methyl-17beta-ol-3-one Acetate CAS: 434-05-9 EINECS: 207-097-0 Assay: 99% min. Molecular Formula: C22H32O3 Molecular Weight: 344.4877 Character: White crystalline powder. Usage: pharmaceutical material, Steroid hormone, Anabolin. As a male hormone and anabolic hormones.