Synonyms: (8r,9s,14s)-13-ethyl-17-ethynyl-3-methoxy-7,8,9,11,12,13,14,15,16,17-decahydro-6h-cyclopenta[a]phenanthren-17-ol(non-preferred name);1649-92-9;18-Methylmestranol;AC1L4V75;KST-1A1881;14009-70-2;AR-1A7254;18,19-Dinorpregna-1,3,5(10)-trien-20-yn-17-ol, 13-ethyl-3-methoxy-, (17alpha)-;(8R,9S,14S)-13-ethyl-17-ethynyl-3-methoxy-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-ol