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发明人徐明华,陈志强,王建平. "Method for the Synthesis of 3-(3-Aminopropyl)-1,3-diazaspiro[4.4]nonane-2,4-dione" [P]. 中国发明专利, 专利号 CN 117711108 B, 授权公告日 2016-02-03.
发明人赵玉洁,杨光,罗永刚. "A Process for Preparing High-Purity 3-(3-Aminopropyl)-1,3-diazaspiro[4.4]nonane-2,4-dione" [P]. 中国发明专利, 专利号 CN 111122253 B, 授权公告日 2025-04-03.
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