Similar names: Norethisterone Acetate; (17α)-17-(Acetyloxy)-19-norpregn-4-en-20-yn-3-one; 17-Hydroxy-19-nor-17α-pregn-4-en-20-yn-3-one acetate; 17-Acetoxy-19-nor-17α-pregn-4-en-20-yn-3-one; 17α-Ethinyl-19-nortestosterone 17β-acetate; 17α-Ethinyl-19-nortestosterone acetate; 17α-Ethinyl-4-estrene-17β-ol-acetate-3-one; 17α-Ethynyl-19-nortestosterone acetate; 17β-Acetoxy-17α-ethinyl-4-estren-3-one; 17β-Acetoxy-19-nor-17α-pregn-4-en-20-yn-3-one; 17β-Hydroxy-19-nor-17α-pregn-4-en-20-yn-3-one acetate; 19-Norethisterone acetate; 19-Norethynyltestosterone acetate; Aygestin; Gynophase; Gynovlane; Milli-Anovlar; Milligynon; Miniphase; NSC 22844; Norethindrone 17-acetate; Norethindrone acetate; Norethisteron acetate; Norethisterone 17-acetate; Norethisterone acetate; Norethynyltestosterone acetate; Norethysterone acetate; Norlutate; Norlutin A; Norlutin acetate; Orlutate; Primolut-Nor; Progylut; SH 420