4-Amino-3-(bromomethyl)-6-(difluoromethyl)pyridine-2-carboxaldehyde
5-Amino-4-(chloromethyl)-3-(difluoromethyl)pyridine-2-acetonitrile
2-Amino-6-(bromomethyl)-5-(difluoromethyl)pyridine-3-carboxaldehyde
2-Amino-6-(aminomethyl)-3-(difluoromethyl)pyridine-4-acetonitrile