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