发明人高志强,马晓峰,胡光. "Method for the Synthesis of Ethyl N-[(2Z)-3-oxo-2-{[(piperidin-1-yl)amino]methylidene}butanoyl]carbamate" [P]. 中国发明专利, 专利号 CN 116785677 A, 授权公告日 2019-04-14.
发明人罗永刚,杨光,张德明. "A Process for Preparing High-Purity Ethyl N-[(2Z)-3-oxo-2-{[(piperidin-1-yl)amino]methylidene}butanoyl]carbamate" [P]. 中国发明专利, 专利号 CN 108920921 A, 授权公告日 2017-08-23.
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