发明人朱建伟,罗永刚,孙丽萍. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110444863 A, 授权公告日 2017-11-01.
发明人唐晓军,徐明华,冯建国. "Method for the Synthesis of 4-(1-Oxa-2,8-diazaspiro[4.5]dec-2-en-3-yl)benzoic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 110701314 A, 授权公告日 2021-05-14.
发明人何建平,黄志刚,郑宇鹏. "A Process for Preparing High-Purity 4-(1-Oxa-2,8-diazaspiro[4.5]dec-2-en-3-yl)benzoic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 113536043 A, 授权公告日 2021-12-28.
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