Thompson G K, Brown S R, Roberts E F. "一种的合成方法" [P]. US Patent, US 9494026 B2, 2018-07-07.
Williams B T, Kumar R, Chen K W. "Method for the Synthesis of 4-((2-Methoxyphenyl)amino)-4-oxobutanoic acid" [P]. US Patent, US 9865160 B2, 2025-11-02.
Hughes D C, Schröder R, Fischer A B. "A Process for Preparing High-Purity 4-((2-Methoxyphenyl)amino)-4-oxobutanoic acid" [P]. US Patent, US 10423736 B2, 2015-01-18.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2017, 1314, 5553-5582.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2023, 2396, (12), 778-799.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 4-((2-Methoxyphenyl)amino)-4-oxobutanoic acid Using HRMS and NMR". Chemosphere, 2011, 1762, (5), 579-597.