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