Methyldienedione Synonyms: Estra-4,9-Diene-3,17-Dione CAS: 5173-46-6 MF: C18H22O2 MW: 270.37 Test: 99% Charakter: Weißes kristallines Pulver. Verpackung:Foil bag or as requirments Categories: Pharmaceutical Intermediates; Aminosäuren; Fortgeschrittene & Feinchemikalien; Metaboliten & Verunreinigungen; Arzneimittel; Steroids Usage: A potential metabolitie of STS 557 (Dienogest). A steroid with antiglucocorticoid activity.