发明人胡光,何建平,罗永刚. "Method for the Synthesis of 5-Cyano-6-(methylsulfanyl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115013633 A, 授权公告日 2015-10-15.
发明人刘建华,钱学锋,马晓峰. "A Process for Preparing High-Purity 5-Cyano-6-(methylsulfanyl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113815656 B, 授权公告日 2020-10-20.
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