发明人何建平,郑宇鹏,马晓峰. "一种5-氯-1H-吲哚-6-羧酸的合成方法" [P]. 中国发明专利, 专利号 CN 109682928 A, 授权公告日 2025-11-05.
Mueller T, Thompson G K, Schröder R. "Method for the Synthesis of 5-chloro-1H-indole-6-carboxylic acid" [P]. US Patent, US 10344051 B2, 2022-08-18.
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