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