发明人张德明,何建平,钱学锋. "Method for the Synthesis of 2-Chloro-6-cyano-5-(difluoromethyl)pyridine-3-sulfonamide" [P]. 中国发明专利, 专利号 CN 116907931 B, 授权公告日 2022-08-26.
发明人唐晓军,朱建伟,陈志强. "A Process for Preparing High-Purity 2-Chloro-6-cyano-5-(difluoromethyl)pyridine-3-sulfonamide" [P]. 中国发明专利, 专利号 CN 109540308 A, 授权公告日 2016-02-03.
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