Methyl 6-(aminomethyl)-3-bromo-2-(difluoromethyl)pyridine-4-carboxylate
Methyl 5-bromo-2-(difluoromethyl)-3-iodopyridine-6-acetate
Methyl 2-(aminomethyl)-5-bromo-4-(difluoromethyl)pyridine-3-carboxylate
Methyl 4-bromo-5-(difluoromethyl)-2-iodopyridine-3-acetate