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