2-Hydroxy-5-methyl-6-(trifluoromethoxy)pyridine-3-acetic acid
Methyl 4-fluoro-3-methoxy-5-(trifluoromethoxy)pyridine-2-acetate
Methyl 4-fluoro-6-methoxy-2-(trifluoromethoxy)pyridine-3-acetate
2-Hydroxy-5-methyl-4-(trifluoromethoxy)pyridine-3-acetic acid