发明人郭海燕,高志强,冯建国. "Method for the Synthesis of Benzyl 4,7-diazaspiro[2.5]Octane-4-carboxylate oxalate" [P]. 中国发明专利, 专利号 CN 108937723 A, 授权公告日 2018-04-02.
发明人罗永刚,林芳,沈红梅. "A Process for Preparing High-Purity Benzyl 4,7-diazaspiro[2.5]Octane-4-carboxylate oxalate" [P]. 中国发明专利, 专利号 CN 109833482 A, 授权公告日 2017-02-26.
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