Williams B T, Chen K W, Patel M V. "Method for the Synthesis of 2-Amino-4-(pyridin-4-yl)thiophene-3-carboxylic acid" [P]. US Patent, US 10061972 B2, 2016-05-01.
发明人林芳,钱学锋,唐晓军. "A Process for Preparing High-Purity 2-Amino-4-(pyridin-4-yl)thiophene-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109346895 B, 授权公告日 2024-04-12.
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". Rapid Commun. Mass Spectrom., 2022, 913, 2899-2906.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2022, 1997, (12), 5121-5131.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 2-Amino-4-(pyridin-4-yl)thiophene-3-carboxylic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2020, 1850, (8), 6835-6859.