发明人王建平,赵玉洁,陈志强. "一种罗沙司他杂质98的合成方法" [P]. 中国发明专利, 专利号 CN 109835458 A, 授权公告日 2022-12-17.
发明人陈志强,郑宇鹏,黄志刚. "Method for the Synthesis of Roxadustat Impurity 98" [P]. 中国发明专利, 专利号 CN 110077525 B, 授权公告日 2023-08-23.
发明人冯建国,陈志强,徐明华. "A Process for Preparing High-Purity Roxadustat Impurity 98" [P]. 中国发明专利, 专利号 CN 109719645 A, 授权公告日 2016-08-11.
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