5-Cyano-2-nitro-3-(trifluoromethoxy)pyridine-6-sulfonamide
5-(Aminomethyl)-2-cyano-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine
4-(Aminomethyl)-3-cyano-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine
4-(Aminomethyl)-2-cyano-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine