3-Cyano-5-hydroxy-2-(trifluoromethoxy)pyridine-6-carboxylic acid
4-Chloro-2-hydroxy-3-methoxy-6-(trifluoromethoxy)pyridine
3-Cyano-2-hydroxy-6-(trifluoromethoxy)pyridine-4-carboxylic acid
3-Chloro-5-hydroxy-2-methoxy-6-(trifluoromethoxy)pyridine
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