2-Bromo-3,6-difluoro-5-(difluoromethyl)pyridine
4-Bromo-3,6-difluoro-2-(difluoromethyl)pyridine
3-Bromo-4,6-difluoro-2-(difluoromethyl)pyridine
2,4-Difluoro-3-(difluoromethyl)-5-iodopyridine
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