Similar names: Norethisterone Acetate Imp. A (EP); Levonorgestrel Imp. U (EP); (17α)-17-Hydroxy-19-Norpregn-4-en-20-yn-3-one; 17-Hydroxy-19-nor-17α-pregn-4-en-20 yn-3-one; 17α-Ethinyl-17β-hydroxy-Δ4-estren-3-one; 17α-Ethinyl-19-nortestosterone; 17α-Ethinylestr-4-en-17β-ol-3-one; 17α-Ethynyl-17-hydroxy-4-estrene-3-one; 17α-Ethynyl-17-hydroxyest-4-en-3-one; 17α-Ethynyl-17-hydroxyestr-4-en-3-one; 17α-Ethynyl-17β-hydroxy-19-norandrost-4-en-3-one; 17α-Ethynyl-17β-hydroxyestr-4-en-3-one; 17α-Ethynyl-19-nor-androst-4-en-17β-ol-3-one; 17α-Ethynyl-19-nortestosterone; 17α-Ethynyl-3-oxo-4-estren-17β-ol; 17β-Hydroxy-17α-ethynylestr-4-en-3-one; 19-Nor-17α-ethynyl-17β-hydroxy-4-androsten-3-one; 19-Nor-17α-ethynylandrosten-17β-ol-3-one; 19-Nor-17α-ethynyltestosterone; 19-Norandrost-4-en-3-one, 17α-ethynyl-17β-hydroxy-; 19-Nortestosterone, 17-ethynyl-; Anovule; Conludaf; Conludag; Estr-4-ene-17α-ethynyl-17β-ol-3-one; Ethinylnortestosterone; Ethynylnortestosterone; Gestest; Menzol; Micronett; Micronor; Micronovum; Mini-Pe; Mini-pill; NSC 9564; Nor-QD; Noralutin; Norcolut; Norethindrone; Norethisteron; Norethisterone; Norethynodrone; Noretisterone Dak; Norfor; Norgestin; Norluten; Norlutin; Norluton; Normapause; Norpregneninolone; Primolut N; Proluteasi; SC 4640; Triella; Utovlan