发明人徐明华,钱学锋,郑宇鹏. "Method for the Synthesis of 2-(3-Oxo-1,4-diazaspiro[4.4]non-2-yl)benzonitrile" [P]. 中国发明专利, 专利号 CN 110138436 A, 授权公告日 2022-12-10.
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