Synonyms: | pregn-5-ene-3,20-dione bis(ethylene ketal);(8S,9S,10R,13S,14S,17S)-10,13-dimethyl-17-(2-methyl-1,3-dioxolan-2-yl)spiro[1,2,4,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthrene-3,2'-1,3-dioxolane];Pregn-5-ene-3,20-dione, cyclic 3,20-bis(1,2-ethanediyl acetal);Deinorgestrel impurity 26 |