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发明人张德明,沈红梅,钱学锋. "A Process for Preparing High-Purity 4-Methoxy-3,3-dimethyl-1,3-dihydro-indol-2-one" [P]. 中国发明专利, 专利号 CN 115762976 A, 授权公告日 2021-10-28.
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