Ethyl 3-bromo-6-(difluoromethyl)-2-iodopyridine-4-acetate
Ethyl 2-(aminomethyl)-6-bromo-3-(difluoromethyl)pyridine-4-carboxylate
Ethyl 3-bromo-6-(difluoromethyl)-4-iodopyridine-2-acetate
Ethyl 6-(aminomethyl)-3-bromo-2-(difluoromethyl)pyridine-4-carboxylate