Björnsson E, Lefèvre J P, Kowalski A. "Method for the Synthesis of Ethyl 4-(4-Acetamidophenyl)-4-oxobutanoate" [P]. European Patent, EP 3406632 A1, 2017-02-18.
Kowalski A, Sørensen M, Rossi M. "A Process for Preparing High-Purity Ethyl 4-(4-Acetamidophenyl)-4-oxobutanoate" [P]. European Patent, EP 3909859 A1, 2022-10-05.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2017, 2108, 4073-4080.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2019, 252, 6985-6995.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 4-(4-Acetamidophenyl)-4-oxobutanoate Using HRMS and NMR". Molecules, 2014, 1709, 6935-6959.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2021, 2455, 4809-4836.