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发明人徐明华,马晓峰,赵玉洁. "A Process for Preparing High-Purity 3-Hydroxy-5-(4-hydroxy-3-methoxyphenyl)-4-(4-methoxybenzoyl)-1-(pyridin-3-ylmethyl)-1H-pyrrol-2(5H)-one" [P]. 中国发明专利, 专利号 CN 113003990 B, 授权公告日 2019-12-03.
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