发明人沈红梅,杨光,徐明华. "Method for the Synthesis of 4-{[2-(oxolan-2-yl)ethyl]amino}benzoic acid" [P]. 中国发明专利, 专利号 CN 113165181 A, 授权公告日 2015-09-01.
发明人赵玉洁,马晓峰,黄志刚. "A Process for Preparing High-Purity 4-{[2-(oxolan-2-yl)ethyl]amino}benzoic acid" [P]. 中国发明专利, 专利号 CN 116379768 B, 授权公告日 2021-04-21.
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