发明人冯建国,徐明华,张德明. "一种奥吡卡朋杂质N1的合成方法" [P]. 中国发明专利, 专利号 CN 114480588 A, 授权公告日 2019-04-18.
发明人王建平,罗永刚,冯建国. "Method for the Synthesis of Opicapone Impurity N1" [P]. 中国发明专利, 专利号 CN 109329525 A, 授权公告日 2023-06-09.
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