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