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