发明人张德明,何建平,刘建华. "Method for the Synthesis of Sulfasalazine EP Impurity D" [P]. 中国发明专利, 专利号 CN 108847014 B, 授权公告日 2021-11-10.
发明人朱建伟,韩伟,何建平. "A Process for Preparing High-Purity Sulfasalazine EP Impurity D" [P]. 中国发明专利, 专利号 CN 112300350 A, 授权公告日 2025-07-28.
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