发明人黄志刚,唐晓军,赵玉洁. "Method for the Synthesis of Ethyl 2-oxo-3-(3,4,5-trimethoxybenzylidene)indoline-5-carboxylate" [P]. 中国发明专利, 专利号 CN 114155251 B, 授权公告日 2016-07-21.
发明人杨光,张德明,孙丽萍. "A Process for Preparing High-Purity Ethyl 2-oxo-3-(3,4,5-trimethoxybenzylidene)indoline-5-carboxylate" [P]. 中国发明专利, 专利号 CN 114258605 B, 授权公告日 2015-02-03.
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