Ethyl 4-(aminomethyl)-2-cyano-3-(difluoromethyl)pyridine-5-carboxylate
Ethyl 4-cyano-6-(difluoromethyl)-2-iodopyridine-3-carboxylate
Methyl 2-(aminomethyl)-4-cyano-3-(difluoromethyl)pyridine-6-acetate
6-Cyano-3-(difluoromethyl)-4-methyl-2-nitropyridine