29199-51-7 3-(Cyclopentyloxy)-8-aza-19-nor-17-alpha-pregna-1,3,5(10)-trien-20-yn-17-ol 8-AZA-19-NOR-17-alpha-PREGNA-1,3,5(10)-TRIEN-20-YN-17-OL, 3-(CYCLOPENTYLOXY)- 8-Aza-19-norpregna-1,3,5(10)-trien-20-yn-17-ol, 3-(cyclopentyloxy)-, (17-alpha)- (9CI) 8-Azaquinestrol BRN 1503273