NGS02: Norgestrel EP Impurity B ;

NGS02: Norgestrel EP Impurity B ;

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Levonorgestrel EP Impurity B Racemate ;

rac-13-Ethyl-17-hydroxy-18,19-dinor-17α-pregn-5(10)-en-20-yn-3-one ;

CAS # 1095-74-5 ;

C21H28O2 ;
Mol. Wt.: 312.45 ;