MMZ04: Metamizole EP Impurity D

4-Dimethylamino Antipyrine ;

1,5-Dimethyl-4-(dimethylamino)-2-phenyl-2,3-dihydro-1H-pyrazol-3-one ;

CAS # 58-15-1 ;

C13H17N3O ;
Mol. Wt.: 231.29 ;