发明人何建平,陈志强,罗永刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113224981 A, 授权公告日 2021-12-23.
发明人韩伟,罗永刚,郑宇鹏. "Method for the Synthesis of tert-Butyl 5-oxo-1,4,9-triazaspiro[5.5]undecane-1-carboxylate" [P]. 中国发明专利, 专利号 CN 117607114 A, 授权公告日 2022-03-19.
发明人罗永刚,林芳,张德明. "A Process for Preparing High-Purity tert-Butyl 5-oxo-1,4,9-triazaspiro[5.5]undecane-1-carboxylate" [P]. 中国发明专利, 专利号 CN 108286615 B, 授权公告日 2023-04-24.
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