Williams B T, Stevens L M, Thompson G K. "一种的合成方法" [P]. US Patent, US 9657093 B2, 2016-03-12.
Klinger H, Lee S K, Fischer A B. "Method for the Synthesis of 7-Amino-4-coumarincarboxylic Acid Ethyl Ester" [P]. US Patent, US 9328308 B2, 2018-11-22.
Sørensen M, Schröder R, Kowalski A. "A Process for Preparing High-Purity 7-Amino-4-coumarincarboxylic Acid Ethyl Ester" [P]. European Patent, EP 3247265 A1, 2019-05-18.
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., 2024, 437, (12), 1830-1858.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2011, 1046, 8607-8617.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 7-Amino-4-coumarincarboxylic Acid Ethyl Ester Using HRMS and NMR". Anal. Methods, 2014, 275, (1), 5706-5734.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2011, 1690, (8), 7255-7258.