2-(Chloromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
2-(Chloromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-4-carboxaldehyde
2-(Chloromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine-6-carboxaldehyde
2-(Fluoromethyl)-6-methoxy-3-(trifluoromethoxy)pyridine-5-carboxaldehyde