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