(+-)-13-Ethyl-17-hydroxy-18,19-dinor-17alpha-pregn-4-en-20-yn-3-one 18,19-Dinor-17-alpha-pregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-, (+-)- 18,19-Dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-, (17alpha)-(+-)- 6533-00-2 EINECS 229-433-5 FH 122-A Follistrel HSDB 3595 LD norgestrel [French] Lo/Ovral Methylnorethindrone Monovar NORGESTREL Neogest Norgestrel [Progestins] Norgestrel [USAN:BAN:INN:JAN] Norgestrelum [INN-Latin] Ovral Ovrette Postinor SH 70850 SH 850 Wy 3707 dl-13-beta-Ethyl-17-alpha-ethynyl-17-beta-hydroxygon-4-en-3-one dl-13-beta-Ethyl-17-alpha-ethynyl-19-nortestosterone