发明人杨光,钱学锋,韩伟. "Method for the Synthesis of Methyl 5-((2-oxoindolin-3-ylidene)methyl)furan-2-carboxylate" [P]. 中国发明专利, 专利号 CN 108758802 B, 授权公告日 2021-11-23.
发明人唐晓军,徐明华,刘建华. "A Process for Preparing High-Purity Methyl 5-((2-oxoindolin-3-ylidene)methyl)furan-2-carboxylate" [P]. 中国发明专利, 专利号 CN 112447416 A, 授权公告日 2019-11-05.
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