Ethyl 2-cyano-3-iodo-4-(trifluoromethoxy)pyridine-5-carboxylate
3-(Chloromethyl)-2-cyano-4-fluoro-5-(trifluoromethoxy)pyridine
Methyl 3-cyano-6-iodo-4-(trifluoromethoxy)pyridine-2-carboxylate
6-(Chloromethyl)-2-cyano-4-fluoro-3-(trifluoromethoxy)pyridine