发明人徐明华,林芳,黄志刚. "一种磺胺多辛杂质4的合成方法" [P]. 中国发明专利, 专利号 CN 113262360 A, 授权公告日 2016-03-07.
发明人冯建国,马晓峰,徐明华. "Method for the Synthesis of Sulfadoxine impurity 4" [P]. 中国发明专利, 专利号 CN 112463723 A, 授权公告日 2025-01-18.
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