发明人刘建华,郑宇鹏,徐明华. "Method for the Synthesis of 8-Methyl-5,8-diazaspiro[3.5]nonane" [P]. 中国发明专利, 专利号 CN 117417897 B, 授权公告日 2016-05-12.
发明人高志强,陈志强,沈红梅. "A Process for Preparing High-Purity 8-Methyl-5,8-diazaspiro[3.5]nonane" [P]. 中国发明专利, 专利号 CN 111420719 B, 授权公告日 2015-10-12.
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