Verapamil EP Impurity F

Chemical Name: 3,4-Dimethoxy-α-[3-(methylamino)propyl]-α-(1-methylethyl)benzeneacetonitrile;1-Isopropyl-1-N-methylpropylamino-(3,4-dimethoxyphenyl)acetonitrile; 2-(3,4-Dimethoxyphenyl)-2-isopropyl-5-(methylamino)valeronitrile; N-Methyl-4-(3,4-dimethoxyphenyl)-4-cyano-5-methylhexylamine;