4-Hydroxy-6-methyl-2-(trifluoromethoxy)pyridine-3-acetic acid
4-Hydroxy-2-methyl-5-(trifluoromethoxy)pyridine-3-acetic acid
4-(Bromomethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine-6-acetic acid
3-(Bromomethyl)-5-hydroxy-6-(trifluoromethoxy)pyridine-2-acetic acid