2-Cyano-6-methyl-4-(trifluoromethoxy)pyridine-3-sulfonamide
5-Cyano-2-(difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine
4-Cyano-3-(difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine
4-Cyano-3-(difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine