Ethyl 3-bromo-5-(difluoromethyl)-2-fluoropyridine-6-carboxylate
Ethyl 5-bromo-4-(difluoromethyl)-2-fluoropyridine-3-carboxylate
3-Bromo-2-(difluoromethyl)-4-methoxypyridine-5-carboxaldehyde
Methyl 4-bromo-3-(difluoromethyl)-6-methoxypyridine-2-carboxylate