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