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