英文别名3,3,20,20-Bis-ethylendioxy-9β,10α-pregna-5,7-dien; 3,20-Bis-(ethylendioxy)-9β-10α-pregna-5,7-dien; Dydrogesterone bis(Ethylene Acetal); (9R,10S,13S,14R,17S)-10,13-dimethyl-17-(2-methyl-1,3-dioxolan-2-yl)spiro[1,2,4,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,2'-1,3-dioxolane]; Pregna-5,7-diene-3,20-dione, cyclic 3,20-bis(1,2-ethanediyl acetal), (9β,10α)-; Dydrogesterone Bis(Ethylene Acetal)/9β,10α-3,20-Bis (ethylenedioxy)pregna-5,7-diene-3,20-dione; (10S,13S,17S)-10,13-dimethyl-17-(2-methyl-1,3-dioxolan-2-yl)-1,2,4,9,10,11,12,13,14,15,16,17-dodecahydrospiro[cyclopenta[a]phenanthrene-3,2'-[1,3]dioxolane] 
