2-Cyano-5-(difluoromethyl)-3-hydroxy-6-(trifluoromethyl)pyridine
6-Cyano-4-(difluoromethyl)-3-methoxy-2-(trifluoromethyl)pyridine
5-Cyano-2-(difluoromethyl)-4-iodopyridine-3-sulfonamide
4-(Chloromethyl)-5-cyano-3-(difluoromethyl)-2-methoxypyridine
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