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发明人孙丽萍,王建平,徐明华. "A Process for Preparing High-Purity 3-((4-Methoxyphenyl)diazenyl)-1-methyl-1H-indol-2-ol" [P]. 中国发明专利, 专利号 CN 115648047 B, 授权公告日 2021-08-21.
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