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