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