5-Bromo-3-hydroxy-2-(trifluoromethoxy)pyridine-4-sulfonamide
6-Bromo-3-cyano-4-(fluoromethyl)-2-(trifluoromethoxy)pyridine
3-Bromo-5-hydroxy-4-(trifluoromethoxy)pyridine-2-sulfonamide
2-Bromo-5-cyano-3-(fluoromethyl)-4-(trifluoromethoxy)pyridine
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