发明人徐明华,杨光,郑宇鹏. "Method for the Synthesis of 7,7-Difluoro-2-azaspiro[3.5]Nonane" [P]. 中国发明专利, 专利号 CN 114627836 A, 授权公告日 2018-12-24.
发明人刘建华,何建平,周伟. "A Process for Preparing High-Purity 7,7-Difluoro-2-azaspiro[3.5]Nonane" [P]. 中国发明专利, 专利号 CN 113374905 A, 授权公告日 2025-05-27.
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