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