发明人罗永刚,胡光,沈红梅. "一种5-甲基-6-氮杂吲哚-2-甲酸的合成方法" [P]. 中国发明专利, 专利号 CN 114840266 A, 授权公告日 2019-04-01.
发明人唐晓军,郭海燕,李文辉. "Method for the Synthesis of 5-Methyl-6-azaindole-2-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 112279189 B, 授权公告日 2022-03-05.
发明人黄志刚,冯建国,陈志强. "A Process for Preparing High-Purity 5-Methyl-6-azaindole-2-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 111879864 A, 授权公告日 2024-01-06.
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