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