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