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发明人郭海燕,朱建伟,韩伟. "A Process for Preparing High-Purity 6-Methoxy-2-methyl-1,2,3,4-tetrahydroisoquinoline-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109408460 B, 授权公告日 2015-06-06.
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