发明人唐晓军,罗永刚,刘建华. "一种柳氮磺吡啶EP杂质C的合成方法" [P]. 中国发明专利, 专利号 CN 110300279 A, 授权公告日 2018-05-20.
发明人郑宇鹏,韩伟,王建平. "Method for the Synthesis of Sulfasalazine EP Impurity C" [P]. 中国发明专利, 专利号 CN 113709561 B, 授权公告日 2025-03-28.
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