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