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