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