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