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