发明人唐晓军,周伟,马晓峰. "Method for the Synthesis of 2-Ethyl-2,8-diazaspiro[5.5]Undecane" [P]. 中国发明专利, 专利号 CN 114315100 A, 授权公告日 2023-04-03.
发明人赵玉洁,高志强,李文辉. "A Process for Preparing High-Purity 2-Ethyl-2,8-diazaspiro[5.5]Undecane" [P]. 中国发明专利, 专利号 CN 110250381 B, 授权公告日 2024-04-03.
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