Patel M V, Park J H, Anderson J P. "Method for the Synthesis of 2-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)-5-methylthiophene-3-carboxylic acid" [P]. US Patent, US 11243992 B2, 2025-04-13.
Martínez F, Jørgensen K, Schröder R. "A Process for Preparing High-Purity 2-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)-5-methylthiophene-3-carboxylic acid" [P]. European Patent, EP 3018768 A1, 2024-03-21.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2010, 2220, (6), 4971-4975.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2021, 1172, (11), 6520-6543.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 2-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)-5-methylthiophene-3-carboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2019, 2450, (7), 6321-6348.