Methyl 2-bromo-3-(difluoromethyl)-6-methylpyridine-4-acetate
4-Bromo-5-(bromomethyl)-3-(difluoromethyl)pyridine-2-acetic acid
4-Bromo-3-(bromomethyl)-2-(difluoromethyl)pyridine-6-acetic acid
4-Bromo-6-(bromomethyl)-2-(difluoromethyl)pyridine-3-acetic acid