发明人钱学锋,冯建国,马晓峰. "Method for the Synthesis of 5-Amino-2-carboxy-4-cyano-3-thiopheneacetic Acid" [P]. 中国发明专利, 专利号 CN 114222222 A, 授权公告日 2020-05-15.
Thompson G K, Johnson M A, Klinger H. "A Process for Preparing High-Purity 5-Amino-2-carboxy-4-cyano-3-thiopheneacetic Acid" [P]. US Patent, US 11686541 B2, 2015-06-11.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2018, 302, (5), 3910-3940.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2011, 2432, 2513-2525.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 5-Amino-2-carboxy-4-cyano-3-thiopheneacetic Acid Using HRMS and NMR". Molecules, 2021, 312, (8), 6026-6042.