5-Fluoro-2-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
3-(Aminomethyl)-2-cyano-5-(trifluoromethoxy)pyridine-4-acetic acid
5-Chloro-3-(chloromethyl)-4-(trifluoromethoxy)pyridine-2-carboxaldehyde
4-Fluoro-3-hydroxy-6-(trifluoromethoxy)pyridine-2-carboxaldehyde