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