发明人韩伟,罗永刚,张德明. "Method for the Synthesis of Methyl 3-ethyl-2,4-dioxo-1,3-diazaspiro[4.5]decane-8-carboxylate" [P]. 中国发明专利, 专利号 CN 114547023 A, 授权公告日 2020-08-04.
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