Synonyms: Ro 6-5403;AC1O5Z6F;17-Hydroxy-10-(1-propenyl)-(17alpha)-19-norpregna-1,4,6-trien-20-yn-3-one;19 beta-cis-Ethylidene-17alpha-ethynyl-17beta-hydroxy-1,4,6-androstatrien-3-one;(8R,9S,13S,14S)-17-ethynyl-17-hydroxy-13-methyl-10-[(E)-prop-1-enyl]-9,11,12,14,15,16-hexahydro-8H-cyclopenta[a]phenanthren-3-one;51018-08-7