Methyl 2-(bromomethyl)-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-4-acetate
4-(Difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-2-acetonitrile
5-(Difluoromethyl)-3-nitro-2-(trifluoromethoxy)pyridine-4-acetonitrile
4-(Difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine-3-acetonitrile