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