5-Cyano-4-(difluoromethyl)-3-iodopyridine-2-carboxaldehyde
Ethyl 4-(aminomethyl)-5-cyano-2-(difluoromethyl)pyridine-3-carboxylate
3-Cyano-4-(difluoromethyl)-5-iodopyridine-2-acetic acid
Ethyl 4-(aminomethyl)-2-cyano-3-(difluoromethyl)pyridine-5-carboxylate