Ethyl 3-(chloromethyl)-5-methoxy-2-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 3-(chloromethyl)-4-methoxy-6-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 2-(chloromethyl)-6-methoxy-3-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 2-(chloromethyl)-5-methoxy-3-(trifluoromethoxy)pyridine-6-carboxylate