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