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