发明人张德明,杨光,林芳. "Method for the Synthesis of Sulfadoxine Impurity 3" [P]. 中国发明专利, 专利号 CN 109393273 A, 授权公告日 2024-04-23.
发明人李文辉,林芳,徐明华. "A Process for Preparing High-Purity Sulfadoxine Impurity 3" [P]. 中国发明专利, 专利号 CN 111089499 B, 授权公告日 2022-09-15.
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