Methyldienedione Synonyms: Estra-4,9-Diene-3,17-Dione CAS: 5173-46-6 MF: C18H22O2 MW: 270.37 Toets: 99% Character: Wit kristallyne poeier. Packing:Foil bag or as requirments Categories: Farmaseutiese tussenprodukte; Aminosure; Tussengangers & Fyn chemikalieë; Metaboliete & Onsuiwerhede; Farmaseutiese middels; Steroids Usage: A potential metabolitie of STS 557 (Dienogest). A steroid with antiglucocorticoid activity.