发明人罗永刚,赵玉洁,郭海燕. "Method for the Synthesis of Benzyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate" [P]. 中国发明专利, 专利号 CN 110093888 B, 授权公告日 2025-08-13.
发明人徐明华,黄志刚,钱学锋. "A Process for Preparing High-Purity Benzyl 1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate" [P]. 中国发明专利, 专利号 CN 114276337 B, 授权公告日 2015-10-08.
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