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发明人周伟,李文辉,孙丽萍. "A Process for Preparing High-Purity Ethyl 3-amino-5-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)thiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 114436442 A, 授权公告日 2025-09-12.
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