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