发明人何建平,黄志刚,刘建华. "Method for the Synthesis of 1'-Methylspiro[benzo[e][1,3]oxazine-2,4'-piperidin]-4(3H)-one" [P]. 中国发明专利, 专利号 CN 109665542 B, 授权公告日 2024-02-05.
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