发明人郭海燕,钱学锋,陈志强. "Method for the Synthesis of Dicyclohexylamine 4-hydroxy-3-((6-methyl-4-(o-tolyldiazenyl)cyclohexa-1,5-dien-1-yl)diazenyl)naphthalene-2,7-disulfonate" [P]. 中国发明专利, 专利号 CN 108051118 B, 授权公告日 2023-08-17.
发明人孙丽萍,黄志刚,冯建国. "A Process for Preparing High-Purity Dicyclohexylamine 4-hydroxy-3-((6-methyl-4-(o-tolyldiazenyl)cyclohexa-1,5-dien-1-yl)diazenyl)naphthalene-2,7-disulfonate" [P]. 中国发明专利, 专利号 CN 115750243 A, 授权公告日 2022-10-01.
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