(17ฮฑ)-17-Hydroxy-19-norpregn-4-en-20-yn-3-one (ACI); 19-Nor-17ฮฑ-pregn-4-en-20-yn-3-one, 17-hydroxy- (7CI, 8CI); 17-Hydroxy-19-nor-17ฮฑ-pregn-4-en-20 yn-3-one; Anovule; Conludaf; Ethynylnortestosterone; Gestest; Menzol,(8R,9S,10R,13S,14S,17R)-17-ethynyl-17-hydroxy-13-methyl-1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3H-cyclopenta[a]phenanthren-3-one,NULL,Levonorgestrel API