发明人赵玉洁,韩伟,高志强. "Method for the Synthesis of Ethyl 3-cyano-6-ethyl-2-oxo-1,2-dihydropyridine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 116151370 A, 授权公告日 2018-11-08.
发明人胡光,徐明华,马晓峰. "A Process for Preparing High-Purity Ethyl 3-cyano-6-ethyl-2-oxo-1,2-dihydropyridine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 112457004 A, 授权公告日 2024-01-28.
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