发明人高志强,张德明,何建平. "Method for the Synthesis of 9,9-Difluoro-1-oxa-4-azaspiro[5.5]undecane hydrochloride" [P]. 中国发明专利, 专利号 CN 109468901 B, 授权公告日 2020-01-14.
发明人陈志强,徐明华,张德明. "A Process for Preparing High-Purity 9,9-Difluoro-1-oxa-4-azaspiro[5.5]undecane hydrochloride" [P]. 中国发明专利, 专利号 CN 110884019 A, 授权公告日 2019-01-21.
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