Methyldienedione Synonyms: Estra-4,9-Diene-3,17-Dione CAS: 5173-46-6 MF: C18H22O2 MW: 270.37 Essai: 99% Personnage: Poudre cristalline blanche. Emballage:Foil bag or as requirments Categories: Intermédiaires pharmaceutiques; Amino Acids; Intermédiaires & Produits chimiques fins; Metabolites & Impurities; Médicaments; Steroids Usage: A potential metabolitie of STS 557 (Dienogest). A steroid with antiglucocorticoid activity.