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