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