Ethyl 3-bromo-4-(bromomethyl)-2-(difluoromethyl)pyridine-6-carboxylate
Ethyl 3-bromo-2-(bromomethyl)-6-(difluoromethyl)pyridine-5-carboxylate
4-Bromo-3-(difluoromethyl)-5-methylpyridine-2-carboxylic acid
Ethyl 3-bromo-2-(bromomethyl)-5-(difluoromethyl)pyridine-6-carboxylate