发明人刘建华,周伟,冯建国. "Method for the Synthesis of 7-Ethyl-1H-indazole-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115054375 B, 授权公告日 2017-03-07.
Kumar R, Chen K W, Hughes D C. "A Process for Preparing High-Purity 7-Ethyl-1H-indazole-5-carboxylic acid" [P]. US Patent, US 10747550 B2, 2023-03-11.
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