发明人郑宇鹏,马晓峰,刘建华. "Method for the Synthesis of Trimethoprim EP Impurity I(Mixture of cis/trans isomers)" [P]. 中国发明专利, 专利号 CN 111726634 B, 授权公告日 2022-01-24.
发明人赵玉洁,黄志刚,高志强. "A Process for Preparing High-Purity Trimethoprim EP Impurity I(Mixture of cis/trans isomers)" [P]. 中国发明专利, 专利号 CN 108080915 B, 授权公告日 2023-04-02.
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