3-Amino-4-(chloromethyl)-5-(difluoromethyl)pyridine-2-acetonitrile
2-Amino-4-(difluoromethyl)-6-nitropyridine-3-sulfonamide
2-Amino-5-(aminomethyl)-3-(difluoromethyl)pyridine-6-acetonitrile
3-Amino-2-(aminomethyl)-5-(difluoromethyl)pyridine-4-acetonitrile