4-Chloro-2,6-difluoro-3-(difluoromethyl)pyridine
3-Chloro-2,6-difluoro-4-(difluoromethyl)pyridine
4,6-Dichloro-2-(difluoromethyl)-3-fluoropyridine
4,6-Dichloro-3-(difluoromethyl)-2-fluoropyridine
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