2-Chloro-4-hydroxy-6-(trifluoromethoxy)pyridine-3-acetic acid
3-Bromo-6-(chloromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Chloro-4-hydroxy-3-(trifluoromethoxy)pyridine-6-acetic acid
2-Chloro-3-hydroxy-6-(trifluoromethoxy)pyridine-4-acetic acid