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