5-(Aminomethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxaldehyde
4-(Aminomethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxaldehyde
4-(Fluoromethyl)-5-iodo-3-methoxy-2-(trifluoromethoxy)pyridine
3-(Aminomethyl)-4-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxaldehyde