发明人黄志刚,周伟,孙丽萍. "Method for the Synthesis of tert-Butyl 2,7-diazaspiro[3.5]nonane-7-carboxylate oxalic acid" [P]. 中国发明专利, 专利号 CN 113388938 A, 授权公告日 2022-11-02.
发明人王建平,刘建华,钱学锋. "A Process for Preparing High-Purity tert-Butyl 2,7-diazaspiro[3.5]nonane-7-carboxylate oxalic acid" [P]. 中国发明专利, 专利号 CN 115043290 B, 授权公告日 2019-12-26.
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