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发明人罗永刚,唐晓军,杨光. "Method for the Synthesis of 2-(5-(5-Methoxy-1H-indol-2-yl)-2-oxo-1,3,4-oxadiazol-3(2H)-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 111318917 B, 授权公告日 2024-04-02.
发明人孙丽萍,赵玉洁,朱建伟. "A Process for Preparing High-Purity 2-(5-(5-Methoxy-1H-indol-2-yl)-2-oxo-1,3,4-oxadiazol-3(2H)-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 109589336 B, 授权公告日 2021-09-04.
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