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