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