Ethyl 4-cyano-3-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 5-cyano-2-methyl-3-(trifluoromethoxy)pyridine-4-carboxylate
5-Cyano-2-iodo-3-nitro-4-(trifluoromethoxy)pyridine
Ethyl 4-cyano-5-methyl-3-(trifluoromethoxy)pyridine-2-carboxylate