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发明人李文辉,钱学锋,刘建华. "Method for the Synthesis of 3-Methylpyrazine-2-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 113434835 B, 授权公告日 2018-01-22.
发明人钱学锋,冯建国,沈红梅. "A Process for Preparing High-Purity 3-Methylpyrazine-2-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 109171701 A, 授权公告日 2018-01-03.
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