100021-05-4

Levonorgestrel IMpurity P DELTA-5(6)-LEVONORGESTREL Levonorgestrel EP impurity P 5(6)-Dehydro-4(5)-dihydro D-(-)-Norgestrel 5(6)-Dehydro-4(5)-dihydro D-(-)-Norgestrel (~90%) Levonorgestrel Impurity 16（Levonorgestrel EP Impurity P） 13-Ethyl-17-hydroxy-18,19-dinor-17α-pregn-5-en-20-yn-3-one (17a)-13-Ethyl-17-hydroxy-18,19-dinorpregn-5-en-20-yn-3-one (17α)-13-Ethyl-17-hydroxy-18,19-dinorpregn-5-en-20-yn-3-one (17alpha)-13-Ethyl-17-hydroxy-18,19-dinorpregn-5-en-20-yn-3-one 18,19-Dinorpregn-5-en-20-yn-3-one, 13-ethyl-17-hydroxy-, (17α)- (9CI) (8R,9S,10R,13R,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-1,2,4,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one