Synonyms: Pregn-5-ene-3,20-dione,17-hydroxy-6-methyl-, cyclic 3-(ethylene acetal), acetate (7CI,8CI);Spiro[3H-cyclopenta[a]phenanthrene-3,2'-[1,3]dioxolane], pregn-5-ene-3,20-dionederiv.; 3,3-Ethylenedioxy-17-acetoxy-6-methylpregn-5-en-20-one; Edogesterone;Edogestrone; PH 218