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