发明人韩伟,周伟,冯建国. "Method for the Synthesis of 5,5-difluoro-2-azaspiro[3.4]octane;hydrochloride" [P]. 中国发明专利, 专利号 CN 108228269 B, 授权公告日 2022-06-23.
发明人罗永刚,钱学锋,朱建伟. "A Process for Preparing High-Purity 5,5-difluoro-2-azaspiro[3.4]octane;hydrochloride" [P]. 中国发明专利, 专利号 CN 112864848 A, 授权公告日 2017-08-27.
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