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发明人刘建华,冯建国,高志强. "Method for the Synthesis of (2R)-piperazine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111476309 B, 授权公告日 2023-12-23.
发明人郭海燕,周伟,冯建国. "A Process for Preparing High-Purity (2R)-piperazine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108625981 A, 授权公告日 2017-01-25.
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