11-alpha-Methoxy-19-nor-17-alpha-1,3,5(10)-pregnatrien-20-yne-3,17-diol 11-alpha-Methoxyethinylestradiol 19-Norpregna-1,3,5(10)-trien-20-yne-3,17-diol, 11-methoxy-, (11-alpha,17-alpha)- 61665-15-4 CCRIS 5841 RU 16117