发明人周伟,沈红梅,钱学锋. "Method for the Synthesis of Metoprolol Impurity 51" [P]. 中国发明专利, 专利号 CN 115309869 A, 授权公告日 2025-03-01.
发明人张德明,高志强,马晓峰. "A Process for Preparing High-Purity Metoprolol Impurity 51" [P]. 中国发明专利, 专利号 CN 111991605 A, 授权公告日 2017-12-17.
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