17-Hydroxy-19-nor-17-alpha-pregna-4,9,11-trien-20-yn-3-one 17-Hydroxy-19-nor-17alpha-pregna-4,9,11-trien-20-yn-3-one 17-alpha-Ethynyl-17-beta-hydroxyestra-4,9,11-trien-3-one 17alpha-Ethynyltrienolone 19-Nor-17-alpha-pregna-4,9,11-trien-20-yn-3-one, 17-hydroxy- 19-Nor-17alpha-pregna-4,9,11-trien-20-yn-3-one, 17-hydroxy- (8CI) 19-Norpregna-4,9,11-trien-20-yn-3-one, 17-hydroxy-, (17-alpha)- (9CI) 848-21-5 A 301 BRN 6230207 EINECS 212-698-6 Ethynyl trienolone NORGESTRIENONE NSC 101105 Norgestrienona [INN-Spanish] Norgestrienone [DCF:INN] Norgestrienonum [INN-Latin] Ogyline Planor R 2010