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