4-Bromo-2-cyano-3-(difluoromethyl)-6-iodopyridine
4-Bromo-5-cyano-2-(difluoromethyl)-3-iodopyridine
3-Bromo-5-chloro-6-(difluoromethyl)pyridine-2-acetonitrile
5-Bromo-2-cyano-4-(difluoromethyl)-3-methylpyridine
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