发明人李文辉,杨光,王建平. "Method for the Synthesis of Topotecan Carboxylic Acid Sodium Salt" [P]. 中国发明专利, 专利号 CN 112762399 B, 授权公告日 2021-04-09.
发明人郑宇鹏,朱建伟,徐明华. "A Process for Preparing High-Purity Topotecan Carboxylic Acid Sodium Salt" [P]. 中国发明专利, 专利号 CN 108490635 B, 授权公告日 2019-12-19.
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