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