发明人孙丽萍,刘建华,赵玉洁. "Method for the Synthesis of [[2-Oxo-2-(4-pyridin-2-ylpiperazin-1-yl)ethyl]-(phenyl)amino]acetic acid" [P]. 中国发明专利, 专利号 CN 108914417 A, 授权公告日 2020-08-20.
发明人黄志刚,杨光,王建平. "A Process for Preparing High-Purity [[2-Oxo-2-(4-pyridin-2-ylpiperazin-1-yl)ethyl]-(phenyl)amino]acetic acid" [P]. 中国发明专利, 专利号 CN 108319674 A, 授权公告日 2018-04-16.
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