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发明人郑宇鹏,张德明,周伟. "A Process for Preparing High-Purity Methyl 2-((1-benzyl-2-ethyl-1H-indol-4-yl)oxy)acetate" [P]. 中国发明专利, 专利号 CN 109557928 A, 授权公告日 2016-07-25.
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