发明人胡光,唐晓军,沈红梅. "Method for the Synthesis of 2-Oxa-7-azaspiro[4.4]Nonan-8-one" [P]. 中国发明专利, 专利号 CN 108853629 A, 授权公告日 2024-08-28.
发明人杨光,钱学锋,王建平. "A Process for Preparing High-Purity 2-Oxa-7-azaspiro[4.4]Nonan-8-one" [P]. 中国发明专利, 专利号 CN 113945250 A, 授权公告日 2023-03-02.
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