1175109-63-3

6-Oxo D-(-)-Norgestrel Levonorgestrel EP IMP J Levonorgestrel EP impurity J Levonorgestrel IMpurity J (6-Keto Levonorgestrel) Levonorgestrel EP Impurity J (6-Keto Levonorgestrel) Levonorgestrel Impurity 10（Levonorgestrel EP Impurity J） 13-ethyl-17-hydroxy-18,19-dinor-17a-pregn-4-en-20-yn-3,6-dione (17α)-13-Ethyl-17-hydroxy-18,19-dinorpregn-4-en-20-yne-3,6-dione 18,19-Dinorpregn-4-en-20-yne-3,6-dione, 13-ethyl-17-hydroxy-, (17α)- (8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-2,7,8,9,10,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,6-dione