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