发明人罗永刚,杨光,孙丽萍. "Method for the Synthesis of 6-Ethyl-3-hydroxy-5-methylpyrazine-2-carboxamide" [P]. 中国发明专利, 专利号 CN 110797144 A, 授权公告日 2020-10-08.
发明人刘建华,朱建伟,高志强. "A Process for Preparing High-Purity 6-Ethyl-3-hydroxy-5-methylpyrazine-2-carboxamide" [P]. 中国发明专利, 专利号 CN 111398062 A, 授权公告日 2023-06-10.
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