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