发明人高志强,李文辉,马晓峰. "Method for the Synthesis of tert-Butyl 5-oxo-1,4,9-triazaspiro[5.5]undecane-9-carboxylate" [P]. 中国发明专利, 专利号 CN 111925170 B, 授权公告日 2022-06-27.
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