
Ethinylestradiol EP Impurity K ;
4-Methyl Ethynyl Estradiol ;
(17α)-4-Methyl-19-norpregna-1,3,5(10)-trien-20-yne-3,17-diol ;
CAS # 155683-61-7 ;
C21H26O2 ;
MW: 310.43 ;
Ethinylestradiol EP Impurity K ;
4-Methyl Ethynyl Estradiol ;
(17α)-4-Methyl-19-norpregna-1,3,5(10)-trien-20-yne-3,17-diol ;
CAS # 155683-61-7 ;
C21H26O2 ;
MW: 310.43 ;