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