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