发明人李文辉,陈志强,周伟. "Method for the Synthesis of 6-Carbamimidoyl-1H-indazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116452438 A, 授权公告日 2022-07-08.
发明人李文辉,张德明,韩伟. "A Process for Preparing High-Purity 6-Carbamimidoyl-1H-indazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117218395 A, 授权公告日 2018-10-21.
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