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