发明人孙丽萍,罗永刚,徐明华. "Method for the Synthesis of Isopropyl 2-(3-ethoxy-3-oxopropyl)-7-azaspiro[3.5]Nonane-7-carboxylate" [P]. 中国发明专利, 专利号 CN 113923584 A, 授权公告日 2024-02-23.
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