Ethyl 2-cyano-6-hydroxy-3-(trifluoromethoxy)pyridine-4-carboxylate
2-Cyano-4-hydroxy-3-(trifluoromethoxy)pyridine-6-acetonitrile
Ethyl 3-chloro-6-methyl-2-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 2-cyano-5-hydroxy-3-(trifluoromethoxy)pyridine-4-carboxylate