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发明人郑宇鹏,胡光,韩伟. "Method for the Synthesis of 2-Methyl-1-oxa-4,9-diazaspiro[5.5]undecan-3-one" [P]. 中国发明专利, 专利号 CN 115126727 B, 授权公告日 2020-03-20.
发明人王建平,高志强,郑宇鹏. "A Process for Preparing High-Purity 2-Methyl-1-oxa-4,9-diazaspiro[5.5]undecan-3-one" [P]. 中国发明专利, 专利号 CN 111440086 B, 授权公告日 2019-10-28.
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