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