Kumar R, Thompson G K, Roberts E F. "Method for the Synthesis of 4-(4-Fluorophenyl)-3-(1H-pyrrol-1-yl)thiophene-2-carboxylic acid" [P]. US Patent, US 10358539 B2, 2015-02-27.
Stevens L M, Fischer A B, Williams B T. "A Process for Preparing High-Purity 4-(4-Fluorophenyl)-3-(1H-pyrrol-1-yl)thiophene-2-carboxylic acid" [P]. US Patent, US 10538445 B2, 2020-04-11.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2012, 1645, 1400-1414.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2010, 2181, (12), 6920-6934.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of 4-(4-Fluorophenyl)-3-(1H-pyrrol-1-yl)thiophene-2-carboxylic acid Using HRMS and NMR". Sci. Total Environ., 2017, 960, (3), 824-829.