3-Cyano-2-nitro-6-(trifluoromethoxy)pyridine-4-acetonitrile
3-Cyano-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-5-methanol
3-Cyano-2-nitro-4-(trifluoromethoxy)pyridine-6-acetonitrile
6-Cyano-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-methanol