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