发明人何建平,钱学锋,杨光. "Method for the Synthesis of (R)-2-(3-Isobutyl-2-oxopiperazin-1-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 109510348 A, 授权公告日 2020-11-27.
发明人马晓峰,孙丽萍,张德明. "A Process for Preparing High-Purity (R)-2-(3-Isobutyl-2-oxopiperazin-1-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 109129139 B, 授权公告日 2019-08-05.
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