110541-57-6 18,19-Dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-, (17-alpha)-, mixt. with (17-alpha)-19-norpregna-1,3,5(10)-trien-20-yne-3,17-diol 37263-36-8 39366-37-5 52232-43-6 55927-62-3 Adepal Alesse Anna Anteovin Biphasil 21 Biphasil 28 Ethinyl estradiol/levonorgestrel Ethinylestradiol - levonorgestrel mixt. Gynatrol LOC 31 LOC 31A Levonorgestrel - ethynylestradiol mixt. Levonorgestrel-ethinyl estradiol mixt. Levonorgestrel/ethinyl estradiol Logynon Microgynon Microgynon 30 Minisiston Neovlar Nordette PC 4 (contraceptive) Schering PC 4 Stederil 30 Tri-Levlen Tri-Regol Trigynon Trikvilar Trinordiol Triphasil Trisiston