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