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