发明人王建平,徐明华,黄志刚. "Method for the Synthesis of N,S-Carboxymethyl Cysteine HCl" [P]. 中国发明专利, 专利号 CN 112865574 B, 授权公告日 2021-05-07.
发明人杨光,高志强,郭海燕. "A Process for Preparing High-Purity N,S-Carboxymethyl Cysteine HCl" [P]. 中国发明专利, 专利号 CN 115058945 B, 授权公告日 2015-11-07.
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