发明人王建平,罗永刚,韩伟. "一种恩他卡朋杂质30的合成方法" [P]. 中国发明专利, 专利号 CN 109572860 A, 授权公告日 2015-07-18.
发明人孙丽萍,韩伟,张德明. "Method for the Synthesis of Entacapone Impurity 30" [P]. 中国发明专利, 专利号 CN 114054957 B, 授权公告日 2024-05-18.
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