Methyl 2-chloro-6-(chloromethyl)-3-(difluoromethyl)pyridine-5-carboxylate
Methyl 2-chloro-3-(chloromethyl)-6-(difluoromethyl)pyridine-4-carboxylate
Methyl 4-chloro-3-(chloromethyl)-6-(difluoromethyl)pyridine-2-acetate
Methyl 4-chloro-2-(chloromethyl)-3-(difluoromethyl)pyridine-6-acetate