3-Cyano-2-hydroxy-6-(trifluoromethoxy)pyridine-5-methanol
3-Chloro-5-cyano-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine
6-Cyano-2-hydroxy-3-(trifluoromethoxy)pyridine-4-methanol
3-Chloro-4-cyano-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine
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