发明人黄志刚,周伟,张德明. "Method for the Synthesis of tert-Butyl N-[3-methyl-4-oxo-1,3,7-triazaspiro[4.5]decan-2-ylidene]carbamate" [P]. 中国发明专利, 专利号 CN 111719465 B, 授权公告日 2021-04-07.
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