Synonyms: BRN 2164705;17-alpha-Butadiynyl-17-beta-hydroxyestr-4-en-3-one;17-beta-Hydroxy-17-alpha-butadiynyl-estr-4-en-3-one;ESTR-4-EN-3-ONE, 17-alpha-BUTADIYNYL-17-beta-HYDROXY-;AC1L27FK;2010-49-3;LS-64839;(17S)-17-buta-1,3-diynyl-17-hydroxy-13-methyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one