(+)-17-alpha-Ethynyl-17-beta-hydroxy-3-methoxy-1,3,5(10)-estratriene (+)-17-alpha-Ethynyl-17-beta-hydroxy-3-methoxy-1,3,5(10)-oestratriene (17-alpha)-3-Methoxy-19-norpregna-1,3,5(10)-trien-20-yn-17-ol 17-Ethynyl-3-methoxy-1,3,5(10)-oestratien-17-beta-ol 17-Ethynylestradiol 3-methyl ether 17-Ethynyloestradiol