发明人黄志刚,杨光,赵玉洁. "Method for the Synthesis of 4-hydroxy-2-methylnicotinonitrile" [P]. 中国发明专利, 专利号 CN 115958585 A, 授权公告日 2020-01-14.
发明人林芳,孙丽萍,沈红梅. "A Process for Preparing High-Purity 4-hydroxy-2-methylnicotinonitrile" [P]. 中国发明专利, 专利号 CN 113985828 A, 授权公告日 2018-01-08.
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