发明人马晓峰,周伟,陈志强. "Method for the Synthesis of 7-Oxa-2-azaspiro[3.5]Nonane-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117613483 A, 授权公告日 2016-02-12.
发明人周伟,朱建伟,刘建华. "A Process for Preparing High-Purity 7-Oxa-2-azaspiro[3.5]Nonane-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116468061 B, 授权公告日 2021-06-02.
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