发明人黄志刚,林芳,高志强. "Method for the Synthesis of Opicapone impurity 57" [P]. 中国发明专利, 专利号 CN 111686981 A, 授权公告日 2025-02-15.
发明人何建平,唐晓军,马晓峰. "A Process for Preparing High-Purity Opicapone impurity 57" [P]. 中国发明专利, 专利号 CN 115934255 A, 授权公告日 2024-09-06.
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