Methyl 3-(chloromethyl)-5-cyano-2-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 3-(chloromethyl)-2-cyano-5-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 2-(chloromethyl)-5-cyano-3-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 2-(chloromethyl)-3-cyano-4-(trifluoromethoxy)pyridine-5-carboxylate