发明人张德明,赵玉洁,郑宇鹏. "Method for the Synthesis of 3-((E)-(3-acetylphenyl)diazenyl)-6-((E)-(4-chloro-2-phosphonophenyl)diazenyl)-4,5-dihydroxynaphthalene-2,7-disulfonic acid" [P]. 中国发明专利, 专利号 CN 112664446 A, 授权公告日 2022-08-23.
发明人郭海燕,王建平,唐晓军. "A Process for Preparing High-Purity 3-((E)-(3-acetylphenyl)diazenyl)-6-((E)-(4-chloro-2-phosphonophenyl)diazenyl)-4,5-dihydroxynaphthalene-2,7-disulfonic acid" [P]. 中国发明专利, 专利号 CN 115122840 A, 授权公告日 2018-11-17.
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