Ethyl 4-bromo-3-(bromomethyl)-2-(difluoromethyl)pyridine-6-carboxylate
Methyl 2-bromo-5-(difluoromethyl)-3-methylpyridine-4-carboxylate
Methyl 2-bromo-4-(difluoromethyl)-6-methylpyridine-3-carboxylate
Ethyl 4-bromo-6-(bromomethyl)-3-(difluoromethyl)pyridine-2-carboxylate