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