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