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