Levonorgestrel EP impurity B

Name	13-Ethyl-17-hydroxy-18,19-dinorpregn-5(10)-en-20-yn-3-one
Synonyms	EP Levonorgestrel Impurity B Levonorgestrel EP impurity B 13-Ethyl-17a-ethynyl-17-hydroxygon-5(10)-en-3-one 17-Ethinyl-17-hydroxy-18-methylestr-5(10)-en-3-one 13-Ethyl-17-hydroxy-18,19-dinorpregn-5(10)-en-20-yn-3-one 13-Ethyl-17-hydroxy-18,19-dinor-17α-pregn-5(10)-en-20-yn-3-one(Levo Norgestrel Impurity) 13-Ethyl-17-hydroxy-18,19-dinor-17a-pregn-5(10)-en-20-yn-3-one(Levonorgestrel Impurity B) 13-Ethyl-17-hydroxy-18,19-dinor-17α-pregn-5(10)-en-20-yn-3-one(Levonorgestrel Impurity B)
CAS	19914-67-1

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