Norethindrone acetate; CHEMBL4091490; 17-(Acetyloxy)-19-norpregn-4-en-20-yn-3-one; Milligynon; Aygestin; Miniphase; Progylut; Milli-Anovlar; Norlutin A; Norlutin-A; Norlutine acetate; 19-Norpregn-4-en-20-yn-3-one, 17-(acetyloxy)-, (17.alpha.)-; (17beta)-17-ethynyl-3-oxoestr-4-en-17-yl acetate; SH-420C; NSC 22844; NCGC00183366-01; 17.alpha.-Ethinyl-19-nortestosterone acetate; 17.alpha.-Ethynyl-19-nortestosterone acetate; Primodos (Salt/Mix); 17-Acetoxy-19-nor-17.alpha.-pregn-4-en-20-yn-3-one; 17.alpha.-Ethinyl-19-nortestosterone 17.beta.-acetate; 19-Nor-17-alpha-pregn-4-en-20-yn-3-one, 17-acetoxy-; 19-nor-17.alpha.-Pregn-4-en-20-yn-3-one, 17-acetoxy-; 17-Hydroxy-19-nor-17.alpha.-pregn-4-en-20-yn-3-one acetate; 17.beta.-Acetoxy-19-nor-17.alpha.-pregn-4-en-20-yn-3-one; ZINC1833; 17-Acetyloxy(17.alpha.)-19-norpregn-4-estren-17.beta.-ol-acetate-3-one; 17.beta.-Hydroxy-19-nor-17.alpha.-pregn-4-en-20-yn-3-one acetate; SCHEMBL11321479; component of Anovlar (Salt/Mix); CTK5J0457; DTXSID30858970; component of Minovlar (Salt/Mix); component of Estrostep (Salt/Mix); component of Etalontin (Salt/Mix); component of Primosiston (Salt/Mix); BDBM50248357; MFCD00271615; Testerone, 19-nor-17alpha-ethynyl-, acetate; 17-Acetoxy-19-norpregna-4-ene-20-yne-3-one; 17alpha-acetoxy-17beta-ethynyl-4-estren-3-one; 039N850; W-105857; 17.alpha.-Ethynyl-3-oxoestr-4-en-17.beta.-yl acetate; Estr-4-en-3-one, 17.alpha.-ethynyl-17-hydroxy-, acetate; (17-.alpha.)-17-(Acetyloxy)-19-norpregn-4-en-20-yn-3-one; 17.alpha.-Ethynyl-17.beta.-hydroxyestr-4-en-3-one acetate; 19-Nor-17.alpha.-pregn-4-en-20-yn-3-one, 17-hydroxy-, acetate; 19-Norpregn-4-en-20-yn-3-one, 17-(acetyloxy)-, (17.alpha.)