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发明人郑宇鹏,沈红梅,孙丽萍. "A Process for Preparing High-Purity 1,1-Bis(2-hydroxyethyl)-3-(1-(2-methoxyethyl)-1H-indol-3-yl)urea" [P]. 中国发明专利, 专利号 CN 117087693 B, 授权公告日 2015-03-28.
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