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