17-(Acetyloxy)-19-norpregn-4-en-20-yn-3-one 3-oxime 17-alpha-Ethynyl-17-beta-acetoxy-19-norandrost-4-en-3-one oxime 17alpha-Ethynyl-17beta-acetoxy-19-norandrost-4-en-3-one oxime 19-Nor-17-alpha-pregn-4-en-20-yn-3-one, 17-hydroxy-, oxime, acetate 19-Norpregn-4-en-20-yn-3-one, 17-(acetyloxy)-, 3-oxime, (17-alpha)- 20799-24-0 N,17beta-Diacetoxy-17alpha-ethynyl-19-norandrost-4-en-3-one oxime Norethisterone acetate 3-oxime Norethisterone acetate oxime Norethisterone acetate-3-oxime Norethisterone oxime acetate Norethisterone-3-oxime acetate ORF 5263 So-36