Superdrol Powder Raw Steroid Oral Masteron Methasterone Methyldrostanolone Manufacturer Superdrol Methasterone Methyldrostanolone Basic Info Superdrol (Methyldrostanolone) CAS : 3381-88-2 Molecular Formula: C21H34O2 Molecular Weight: 318.4935 Appearance: White or white crystalline powder.   What is Superdrol Methasterone ? Methasterone (nickname Superdrol), also known as methyldrostanolone, is an orally active anabolic-androgenic steroid (AAS) that was never marketed through legitimate channels for medicinal purposes. …