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