2-Cyano-5-hydroxy-3-(trifluoromethoxy)pyridine-4-sulfonamide
6-Cyano-4-hydroxy-3-(trifluoromethoxy)pyridine-2-sulfonamide
6-Fluoro-2-iodo-4-methoxy-3-(trifluoromethoxy)pyridine
2-Fluoro-5-hydroxy-3-(trifluoromethoxy)pyridine-6-methanol
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