3-Chloro-4-hydroxy-2-(trifluoromethoxy)pyridine-6-carboxaldehyde
3-Chloro-2-hydroxy-6-(trifluoromethoxy)pyridine-4-carboxaldehyde
4-Bromo-2-(fluoromethyl)-6-(trifluoromethoxy)pyridine-3-acetic acid
4-Bromo-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetic acid