发明人林芳,陈志强,黄志刚. "Method for the Synthesis of 4-(4,5-Dichloro-6-oxopyridazin-1(6H)-yl)benzenesulfonyl chloride" [P]. 中国发明专利, 专利号 CN 113358804 A, 授权公告日 2016-03-05.
发明人唐晓军,钱学锋,何建平. "A Process for Preparing High-Purity 4-(4,5-Dichloro-6-oxopyridazin-1(6H)-yl)benzenesulfonyl chloride" [P]. 中国发明专利, 专利号 CN 109333556 B, 授权公告日 2020-01-27.
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