发明人黄志刚,郑宇鹏,李文辉. "Method for the Synthesis of Ambroxol impurity 61" [P]. 中国发明专利, 专利号 CN 110825498 A, 授权公告日 2025-03-01.
发明人杨光,王建平,郭海燕. "A Process for Preparing High-Purity Ambroxol impurity 61" [P]. 中国发明专利, 专利号 CN 110379364 B, 授权公告日 2018-09-28.
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