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发明人张德明,赵玉洁,林芳. "A Process for Preparing High-Purity 2-(3-(4-Chlorophenyl)-4-methoxy-6-oxopyridazin-1(6H)-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 114128038 B, 授权公告日 2017-02-27.
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