3-Amino-6-(aminomethyl)-2-(difluoromethyl)pyridine-5-acetic acid
3-Amino-2-(bromomethyl)-5-(difluoromethyl)pyridine-4-acetonitrile
Ethyl 2-amino-4-(aminomethyl)-3-(difluoromethyl)pyridine-5-acetate
4-Amino-3-(aminomethyl)-6-(difluoromethyl)pyridine-2-acetic acid