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发明人朱建伟,韩伟,陈志强. "A Process for Preparing High-Purity Ethyl 4,5-dimethyl-2-propionamidothiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 110390459 B, 授权公告日 2018-12-21.
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