Ethyl 4-chloro-3-cyano-5-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 2-cyano-3-hydroxy-4-(trifluoromethoxy)pyridine-6-acetate
Ethyl 4-chloro-6-cyano-2-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 6-chloro-2-cyano-3-(trifluoromethoxy)pyridine-4-carboxylate