Synonyms: (5|A)-17-ethynylestr-6-ene-5,17-diol;Org OI-65;AC1L4RMH;Org-O1 65;KST-1A5032;AR-1A6596;17alpha-Ethinyl-6-estrene-5alpha,7beta-diol;(5alpha,17alpha)-19-Norpregn-6-en-20-yne-5,17-diol;(5S,8R,9S,10R,13S,14S)-17-ethynyl-13-methyl-1,2,3,4,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-5,17-diol