发明人赵玉洁,朱建伟,张德明. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113610412 A, 授权公告日 2019-02-13.
发明人赵玉洁,冯建国,徐明华. "Method for the Synthesis of 8,8-Dimethyl-7-oxo-2-azaspiro[3.5]non-5-ene-6-carbonitrile hydrochloride" [P]. 中国发明专利, 专利号 CN 117071201 B, 授权公告日 2025-02-02.
发明人林芳,王建平,胡光. "A Process for Preparing High-Purity 8,8-Dimethyl-7-oxo-2-azaspiro[3.5]non-5-ene-6-carbonitrile hydrochloride" [P]. 中国发明专利, 专利号 CN 112862876 B, 授权公告日 2021-12-21.
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