3-Chloro-4-cyano-6-(difluoromethyl)pyridine-2-sulfonyl chloride
3-Chloro-4-cyano-2-(difluoromethyl)pyridine-5-sulfonyl chloride
3-Chloro-4-cyano-2-(difluoromethyl)-6-nitropyridine
Ethyl 2-(aminomethyl)-4-bromo-3-(difluoromethyl)pyridine-5-carboxylate