
Levonorgestrel EP Impurity B ;
13-Ethyl-17-hydroxy-18,19-dinor-17α-pregn-5(10)-en-20-yn-3-one ;
CAS # 19914-67-1 ;
C21H28O2 ;
MW: 312.45 ;
Levonorgestrel EP Impurity B ;
13-Ethyl-17-hydroxy-18,19-dinor-17α-pregn-5(10)-en-20-yn-3-one ;
CAS # 19914-67-1 ;
C21H28O2 ;
MW: 312.45 ;