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