发明人罗永刚,李文辉,杨光. "Method for the Synthesis of Methyl 1-methyl-2,3-dioxoindoline-5-carboxylate" [P]. 中国发明专利, 专利号 CN 116981873 B, 授权公告日 2023-04-06.
发明人唐晓军,张德明,孙丽萍. "A Process for Preparing High-Purity Methyl 1-methyl-2,3-dioxoindoline-5-carboxylate" [P]. 中国发明专利, 专利号 CN 109980717 A, 授权公告日 2020-05-24.
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