Molecular Formula:C20H26O3 CAS Registry Number:5571-36-8 Synonyms: Estra-5(10),9(11)-diene-3,17-dione,cyclic 3-(ethylene acetal) (7CI,8CI); Spiro[3H-cyclopenta[a]phenanthrene-3,2'-[1,3]dioxolane],estra-5(10),9(11)-diene-3,17-dione deriv.; 3,3-(Ethylenedioxy)estra-5(10),9(11)-dien-17-one; Estra-5(10),9(11)-diene-3,17-dione,cyclic 3-(1,2-ethanediyl acetal); Appearance:off-white solid Molecular Weight:314.42 Density:1.2 g/cm3 Boiling Point:488.1 oC at 760 mmHg Melting Point:152-154 oC Application:Mifepristone intermediate; antiprogestational antiglucocorticoid antagonist steroidal spirooxazole. standard:Enterprise standard Assay:99% package:1kg/AL bag