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