发明人孙丽萍,陈志强,韩伟. "Method for the Synthesis of Ethyl 2-methyl-2H-indazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 111854897 B, 授权公告日 2021-08-12.
发明人胡光,张德明,沈红梅. "A Process for Preparing High-Purity Ethyl 2-methyl-2H-indazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 109146140 B, 授权公告日 2023-12-03.
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