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