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