发明人徐明华,冯建国,李文辉. "Method for the Synthesis of 2-Thioxo-1,3-diazaspiro[4.5]decan-4-one" [P]. 中国发明专利, 专利号 CN 108437322 B, 授权公告日 2015-01-24.
发明人李文辉,徐明华,刘建华. "A Process for Preparing High-Purity 2-Thioxo-1,3-diazaspiro[4.5]decan-4-one" [P]. 中国发明专利, 专利号 CN 116320134 A, 授权公告日 2020-01-09.
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