发明人罗永刚,钱学锋,徐明华. "一种5-硝基-1H-吲唑-3-甲酸的合成方法" [P]. 中国发明专利, 专利号 CN 108809584 A, 授权公告日 2019-04-23.
Schröder R, Klinger H, Kumar R. "Method for the Synthesis of 5-Nitro-1H-indazole-3-carboxylic Acid" [P]. US Patent, US 9191881 B2, 2019-12-09.
发明人郑宇鹏,胡光,孙丽萍. "A Process for Preparing High-Purity 5-Nitro-1H-indazole-3-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 109594910 A, 授权公告日 2023-04-15.
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