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