Ethyl 3-(aminomethyl)-5-bromo-2-(difluoromethyl)pyridine-4-carboxylate
6-Bromo-2-(difluoromethyl)-4-iodopyridine-3-carbonyl chloride
Ethyl 3-(aminomethyl)-4-bromo-6-(difluoromethyl)pyridine-2-carboxylate
Ethyl 3-(aminomethyl)-4-bromo-5-(difluoromethyl)pyridine-2-carboxylate