发明人何建平,唐晓军,沈红梅. "Method for the Synthesis of Berberine Impurity 31" [P]. 中国发明专利, 专利号 CN 114325980 B, 授权公告日 2016-11-04.
发明人马晓峰,李文辉,韩伟. "A Process for Preparing High-Purity Berberine Impurity 31" [P]. 中国发明专利, 专利号 CN 112631111 A, 授权公告日 2025-10-20.
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