发明人李文辉,罗永刚,林芳. "Method for the Synthesis of 6,6-Difluoro-2-azaspiro[3.3]heptane hydrochloride" [P]. 中国发明专利, 专利号 CN 108488344 A, 授权公告日 2019-11-27.
发明人周伟,张德明,冯建国. "A Process for Preparing High-Purity 6,6-Difluoro-2-azaspiro[3.3]heptane hydrochloride" [P]. 中国发明专利, 专利号 CN 108189479 B, 授权公告日 2022-10-15.
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