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