发明人高志强,郑宇鹏,陈志强. "Method for the Synthesis of 9-methyl-6-azaspiro[3.5]nonan-7-one" [P]. 中国发明专利, 专利号 CN 108594778 A, 授权公告日 2015-05-27.
发明人钱学锋,周伟,朱建伟. "A Process for Preparing High-Purity 9-methyl-6-azaspiro[3.5]nonan-7-one" [P]. 中国发明专利, 专利号 CN 111202848 B, 授权公告日 2020-08-08.
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