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发明人马晓峰,何建平,陈志强. "A Process for Preparing High-Purity 2'-(2-Methoxyethyl)-1'-oxo-1',4'-dihydro-2'h-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114020903 B, 授权公告日 2019-01-07.
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