19-Nor-17-alpha-pregna-4,9,11-trien-20-yn-3-one, 17-hydroxy-, oxime (8CI) 19-Norpregna-4,9,11-trien-20-yn-3-one, 17-hydroxy-, oxime, (17-alpha)- 19636-23-8 3-Oxidido 17-alpha-ethynyl 17-beta-hydroxy estra-4,9,11-triene [French] BRN 2175051 Oxime,17-hydroxy-19-norpregna-4,9,11-trien-20-yn-3-one R 2010 oxime So 57