Methyl 5-bromo-2-(difluoromethyl)-3-fluoropyridine-4-carboxylate
Methyl 4-bromo-3-(difluoromethyl)-6-fluoropyridine-2-carboxylate
4-Bromo-3-(chloromethyl)-2-(difluoromethyl)-6-iodopyridine
3-Bromo-4-(difluoromethyl)-5-iodopyridine-2-sulfonyl chloride