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