发明人杨光,沈红梅,王建平. "Method for the Synthesis of 5-Bromo-1-ethyl-3-formyl-1H-indole-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113664342 A, 授权公告日 2021-03-18.
发明人孙丽萍,马晓峰,唐晓军. "A Process for Preparing High-Purity 5-Bromo-1-ethyl-3-formyl-1H-indole-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114679612 A, 授权公告日 2016-02-08.
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