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