发明人陈志强,黄志刚,胡光. "Method for the Synthesis of (Z)-4-((4-(diethylamino)-2-hydroxyphenyl)diazenyl)-5-hydroxynaphthalene-2,7-disulfonic acid" [P]. 中国发明专利, 专利号 CN 108318012 B, 授权公告日 2024-03-04.
发明人孙丽萍,沈红梅,赵玉洁. "A Process for Preparing High-Purity (Z)-4-((4-(diethylamino)-2-hydroxyphenyl)diazenyl)-5-hydroxynaphthalene-2,7-disulfonic acid" [P]. 中国发明专利, 专利号 CN 114408820 A, 授权公告日 2018-11-18.
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