2-Chloro-3-(chloromethyl)-4-(trifluoromethoxy)pyridine-5-carboxaldehyde
3-Chloro-6-(chloromethyl)-4-(trifluoromethoxy)pyridine-2-methanol
6-Bromo-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
3-Chloro-5-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxaldehyde