Synonym
(7a,17a)-3,3-Dimethoxy-7-methyl-19-norpregn-5(10)-en-20-yn-17-ol;|(7R,8R,9S,13S,14S,17R)-17-ethynyl-3,3-dimethoxy-7,13-dimethyl-2,3,4,6,7,8,9,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-ol|3,3-dimethoxy-7α-methyl-19-nor-17α-pregn-5(10)-en-20-yn-17-ol;|Tibolone EP Impurity E