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