发明人何建平,李文辉,韩伟. "Method for the Synthesis of Ethyl 2-cyano-2-(1-methyl-2-oxo-2,3-dihydro-1h-indol-3-yl)acetate" [P]. 中国发明专利, 专利号 CN 117514878 A, 授权公告日 2025-05-26.
发明人王建平,马晓峰,张德明. "A Process for Preparing High-Purity Ethyl 2-cyano-2-(1-methyl-2-oxo-2,3-dihydro-1h-indol-3-yl)acetate" [P]. 中国发明专利, 专利号 CN 114095189 B, 授权公告日 2016-01-17.
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