发明人李文辉,唐晓军,杨光. "Method for the Synthesis of Azilsartan Impurity 1" [P]. 中国发明专利, 专利号 CN 114669103 A, 授权公告日 2017-06-13.
发明人徐明华,张德明,冯建国. "A Process for Preparing High-Purity Azilsartan Impurity 1" [P]. 中国发明专利, 专利号 CN 116774464 B, 授权公告日 2023-09-27.
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