发明人李文辉,冯建国,郭海燕. "Method for the Synthesis of Piperazin-1-yl(2-thienyl)acetic acid dihydrochloride" [P]. 中国发明专利, 专利号 CN 111309883 B, 授权公告日 2021-05-17.
发明人杨光,王建平,陈志强. "A Process for Preparing High-Purity Piperazin-1-yl(2-thienyl)acetic acid dihydrochloride" [P]. 中国发明专利, 专利号 CN 114705559 B, 授权公告日 2015-06-22.
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