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发明人郭海燕,杨光,郑宇鹏. "Method for the Synthesis of 1,7-Diazaspiro[4.4]nonan-2-one Trifluoroacetate" [P]. 中国发明专利, 专利号 CN 111038307 A, 授权公告日 2024-07-22.
发明人黄志刚,高志强,钱学锋. "A Process for Preparing High-Purity 1,7-Diazaspiro[4.4]nonan-2-one Trifluoroacetate" [P]. 中国发明专利, 专利号 CN 117515554 B, 授权公告日 2025-04-02.
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