155683-60-6

Levonorgestrel IMpurity O 4,5-Dihydro-5α-Methoxylevonorgestrel 4,5-Dihydro-5a-methoxylevonorgestrel 4,5-DIHYDRO-5Α-METHOXYLEVONORGESTREL 4,5-Dihydro-5α-Methoxy D-(-)-Norgestrel 4,5-Dihydro-5α-Methoxy D-(-)-Norgestrel Discontinued Levonorgestrel Impurity 15（Levonorgestrel EP Impurity O） 13-ethyl-17-hydroxy-5a-methoxy-18,19-dinor-17a-pregn-20-yn-3-one (5α,17α)-13-Ethyl-17-hydroxy-5-Methoxy-18,19-dinorpregn-20-yn-3-one 18,19-Dinorpregn-20-yn-3-one, 13-ethyl-17-hydroxy-5-methoxy-, (5α,17α)- (9CI) (5R,8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-5-methoxy-2,4,6,7,8,9,10,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-3-one