3-Chloro-5-cyano-2-(difluoromethyl)pyridine-6-sulfonyl chloride
4-Chloro-2-(difluoromethyl)-6-fluoropyridine-3-carboxylic acid
4-Chloro-2-(difluoromethyl)-5-fluoropyridine-3-carboxylic acid
4-Chloro-2-(difluoromethyl)-3-fluoropyridine-5-carboxylic acid