发明人赵玉洁,唐晓军,刘建华. "一种妥布特罗杂质3的合成方法" [P]. 中国发明专利, 专利号 CN 114411130 A, 授权公告日 2018-07-27.
发明人徐明华,韩伟,沈红梅. "Method for the Synthesis of Tulobuterol Impurity 3" [P]. 中国发明专利, 专利号 CN 109166429 A, 授权公告日 2021-11-08.
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