发明人何建平,杨光,陈志强. "一种2-(2-氰基乙酰基氨基)-4-乙基-5-甲基-噻吩-3-甲酸乙酯的合成方法" [P]. 中国发明专利, 专利号 CN 112026227 A, 授权公告日 2024-08-06.
发明人刘建华,朱建伟,唐晓军. "Method for the Synthesis of Ethyl 2-(2-cyanoacetamido)-4-ethyl-5-methylthiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 117340248 A, 授权公告日 2016-01-27.
Brown S R, Patel M V, Davis P L. "A Process for Preparing High-Purity Ethyl 2-(2-cyanoacetamido)-4-ethyl-5-methylthiophene-3-carboxylate" [P]. US Patent, US 10530208 B2, 2025-02-14.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of 2-(2-氰基乙酰基氨基)-4-乙基-5-甲基-噻吩-3-甲酸乙酯 in Pharmaceutical Formulations". Anal. Chim. Acta, 2021, 784, (1), 7973-7987.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of 2-(2-氰基乙酰基氨基)-4-乙基-5-甲基-噻吩-3-甲酸乙酯 as an Impurity". J. Pharm. Biomed. Anal., 2021, 925, 2887-2894.