(8R,9S,10R,13S,14S,17R)-17-ethynyl-17-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one 434-03-7 Prestwick3_000261 MLS000069396 17beta-Hydroxy-4,17alpha-pregnen-20-yn-3-one 4,17alpha-Pregnen-17beta-ol-20-yn-3-one 46272_RIEDEL BB_NC-0626 ZINC03881635 SMR000058320 (17alpha)-17-hydroxypregn-4-en-20-yn-3-one E1001_SIGMA BPBio1_000114 17alpha-Ethynyl-17beta-hydroxyandrost-4-en-3-one C14487 17alpha-Ethynyltestosterone BSPBio_000102