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发明人李文辉,林芳,周伟. "A Process for Preparing High-Purity Ethyl 2-(2-chloroacetamido)-4-(3,4-dimethoxyphenyl)thiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 112198420 A, 授权公告日 2024-11-02.
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