4-Cyano-6-(difluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine
2-Cyano-6-hydroxy-4-iodo-3-(trifluoromethoxy)pyridine
5-Cyano-4-(difluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine
2-Cyano-5-hydroxy-6-iodo-3-(trifluoromethoxy)pyridine
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