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发明人钱学锋,孙丽萍,张德明. "A Process for Preparing High-Purity 7-({3-[(ethoxycarbonyl)amino]phenoxy}sulfonyl)-2,3-dihydro-1,4-benzodioxine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108261552 A, 授权公告日 2023-05-02.
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