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