32419-58-2

Levonorgestrel EP IMP D Levonorgestrel IMpurity D EP Levonorgestrel Impurity D Levonorgestrel EP impurity D 13-ethyl-18,19-dinor-17a-pregn-4-en-20-yn-17-ol (17a)-13-Ethyl-18,19-dinorpregn-4-en-20-yn-17-ol (17α)-13-Ethyl-18,19-dinorpregn-4-en-20-yn-17-ol 13-Ethyl-18,19-dinor-17a-pregn-4-en-20-yn-17-ol - EP Levonorgestrel Impurity 4（Levonorgestrel EP Impurity D） 18,19-Dinorpregn-4-en-20-yn-17-ol, 13-ethyl-, (17α)- (9CI) 13-Ethyl-18,19-dinor-17α-pregn-4-en-20-yn-17-ol (Levo Norgestrel Impurity) 13-Ethyl-18,19-dinor-17α-pregn-4-en-20-yn-17-ol (Levo Norgestrel Impurity) 13-Ethyl-18,19-dinor-17a-pregn-4-en-20-yn-17-ol (Levo Norgestrel IMpurity) 13-Ethyl-18,19-dinor-17a-pregn-4-en-20-yn-17-ol(Levonorgestrel Impurity D) 13-Ethyl-18,19-dinor-17α-pregn-4-en-20-yn-17-ol(Levonorgestrel Impurity D) 13-Ethyl-18,19-dinor-17α-pregn-4-en-20-yn-17-ol (~90%) (Levo Norgestrel Impurity)