5-Cyano-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-methanol
6-Chloro-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
6-Cyano-4-nitro-3-(trifluoromethoxy)pyridine-2-sulfonamide
2-Chloro-5-nitro-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride