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发明人钱学锋,李文辉,林芳. "A Process for Preparing High-Purity Methyl 2-(1-(benzo[d][1,3]dioxol-5-ylmethyl)-4-hydroxy-2-oxo-1,2-dihydropyridin-3-yl)acetate" [P]. 中国发明专利, 专利号 CN 117503525 B, 授权公告日 2018-11-17.
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