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