发明人李文辉,周伟,冯建国. "Method for the Synthesis of 3-[(2-aminoethyl)(2-carboxyethyl)amino]propanoic acid dihydrochloride" [P]. 中国发明专利, 专利号 CN 108861830 B, 授权公告日 2015-05-20.
发明人胡光,朱建伟,黄志刚. "A Process for Preparing High-Purity 3-[(2-aminoethyl)(2-carboxyethyl)amino]propanoic acid dihydrochloride" [P]. 中国发明专利, 专利号 CN 115846924 B, 授权公告日 2015-10-07.
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