发明人郭海燕,冯建国,黄志刚. "Method for the Synthesis of (R)-6-Methyl-4,7-diazaspiro[2.5]octane-5,8-dione" [P]. 中国发明专利, 专利号 CN 110419598 A, 授权公告日 2024-03-09.
发明人黄志刚,杨光,李文辉. "A Process for Preparing High-Purity (R)-6-Methyl-4,7-diazaspiro[2.5]octane-5,8-dione" [P]. 中国发明专利, 专利号 CN 109235193 A, 授权公告日 2025-09-01.
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