4-Cyano-5-(difluoromethyl)-2-nitropyridine-3-sulfonamide
5-(Chloromethyl)-2-cyano-3-(difluoromethyl)pyridine-6-methanol
3-(Aminomethyl)-2-cyano-4-(difluoromethyl)-6-(trifluoromethyl)pyridine
4-(Aminomethyl)-3-cyano-2-(difluoromethyl)pyridine-6-methanol