发明人郭海燕,沈红梅,韩伟. "Method for the Synthesis of 6-((5-Chloro-3-methylbenzofuran-2-yl)sulfonyl)pyridazin-3(2H)-one" [P]. 中国发明专利, 专利号 CN 116982943 A, 授权公告日 2017-08-12.
发明人朱建伟,高志强,杨光. "A Process for Preparing High-Purity 6-((5-Chloro-3-methylbenzofuran-2-yl)sulfonyl)pyridazin-3(2H)-one" [P]. 中国发明专利, 专利号 CN 117163399 A, 授权公告日 2020-04-24.
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