发明人张德明,李文辉,徐明华. "Method for the Synthesis of 7-Oxa-5-azaspiro[3.4]octane-6,8-dione" [P]. 中国发明专利, 专利号 CN 108644161 A, 授权公告日 2016-07-03.
发明人高志强,徐明华,郭海燕. "A Process for Preparing High-Purity 7-Oxa-5-azaspiro[3.4]octane-6,8-dione" [P]. 中国发明专利, 专利号 CN 108425601 A, 授权公告日 2017-04-25.
参考文献 Literature
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