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