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