发明人陈志强,郑宇鹏,朱建伟. "Method for the Synthesis of 4-(2,4-Dioxo-1,3-diazaspiro[4.5]dec-3-yl)butanoic acid" [P]. 中国发明专利, 专利号 CN 115607674 B, 授权公告日 2019-06-25.
发明人马晓峰,郭海燕,何建平. "A Process for Preparing High-Purity 4-(2,4-Dioxo-1,3-diazaspiro[4.5]dec-3-yl)butanoic acid" [P]. 中国发明专利, 专利号 CN 115541469 B, 授权公告日 2020-03-28.
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