发明人胡光,周伟,高志强. "Method for the Synthesis of 7-oxa-2-azaspiro[3.5]nonane-1-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 117219902 A, 授权公告日 2018-05-06.
发明人何建平,高志强,冯建国. "A Process for Preparing High-Purity 7-oxa-2-azaspiro[3.5]nonane-1-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 116228062 A, 授权公告日 2019-04-02.
参考文献 Literature
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Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of 7-oxa-2-azaspiro[3.5]nonane-1-carboxylic acid hydrochloride as an Impurity". Molecules, 2020, 1324, (11), 1661-1672.