发明人李文辉,黄志刚,胡光. "一种缬苯那嗪杂质2的合成方法" [P]. 中国发明专利, 专利号 CN 113569708 A, 授权公告日 2017-07-11.
发明人李文辉,陈志强,韩伟. "Method for the Synthesis of Valbenazine Impurity 2" [P]. 中国发明专利, 专利号 CN 111818631 A, 授权公告日 2025-09-09.
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