3-Chloro-6-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxaldehyde
5-Chloro-2-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
4-Chloro-3-hydroxy-6-(trifluoromethoxy)pyridine-2-carboxaldehyde
3-Chloro-4-hydroxy-6-(trifluoromethoxy)pyridine-2-carboxaldehyde