发明人郑宇鹏,林芳,高志强. "Method for the Synthesis of 4-(Cyclopropylmethyl)-1-oxa-4,9-diazaspiro[5.5]undecan-3-one" [P]. 中国发明专利, 专利号 CN 111262632 B, 授权公告日 2019-01-07.
发明人何建平,沈红梅,孙丽萍. "A Process for Preparing High-Purity 4-(Cyclopropylmethyl)-1-oxa-4,9-diazaspiro[5.5]undecan-3-one" [P]. 中国发明专利, 专利号 CN 114360262 B, 授权公告日 2024-12-18.
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