6-Cyano-4-(difluoromethyl)-3-nitro-2-(trifluoromethyl)pyridine
5-(Aminomethyl)-2-cyano-4-(difluoromethyl)pyridine-3-acetic acid
4-(Chloromethyl)-6-cyano-3-(difluoromethyl)-2-nitropyridine
Ethyl 6-cyano-4-(difluoromethyl)-2-methoxypyridine-3-carboxylate