2-(Difluoromethyl)-3-hydroxy-5-nitro-4-(trifluoromethoxy)pyridine
3-(Aminomethyl)-2-hydroxy-5-(trifluoromethoxy)pyridine-6-carboxaldehyde
4-(Fluoromethyl)-3-hydroxy-5-nitro-2-(trifluoromethoxy)pyridine
3-(Aminomethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine-5-carboxaldehyde