2-(Difluoromethyl)-3-methyl-5-(trifluoromethyl)pyridine-6-acetonitrile
4-(Difluoromethyl)-3-methyl-5-(trifluoromethyl)pyridine-2-acetonitrile
2-(Difluoromethyl)-3-methyl-4-(trifluoromethyl)pyridine-6-acetonitrile
4-(Difluoromethyl)-2-methyl-6-(trifluoromethyl)pyridine-3-acetonitrile