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发明人黄志刚,钱学锋,徐明华. "Method for the Synthesis of (E)-4-methyl-5-((sulfomethyl)amino)-2-(thiazol-2-yldiazenyl)benzoic acid" [P]. 中国发明专利, 专利号 CN 113537934 B, 授权公告日 2016-04-13.
发明人杨光,陈志强,李文辉. "A Process for Preparing High-Purity (E)-4-methyl-5-((sulfomethyl)amino)-2-(thiazol-2-yldiazenyl)benzoic acid" [P]. 中国发明专利, 专利号 CN 115366300 A, 授权公告日 2022-08-27.
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