Methyl 3-fluoro-4-hydroxy-6-(trifluoromethoxy)pyridine-2-acetate
Methyl 2-fluoro-5-hydroxy-3-(trifluoromethoxy)pyridine-6-acetate
3-Fluoro-6-hydroxy-2-(trifluoromethoxy)pyridine-5-acetic acid
Ethyl 4-fluoro-2-hydroxy-6-(trifluoromethoxy)pyridine-3-acetate