Davis P L, Patel M V, Anderson J P. "一种的合成方法" [P]. US Patent, US 11343834 B2, 2015-12-09.
Stevens L M, Mueller T, Lee S K. "Method for the Synthesis of Ethyl 2-((2-methyl-4-nitrophenyl)amino)-2-oxoacetate" [P]. US Patent, US 9241644 B2, 2016-08-25.
Schröder R, Brown S R, Williams B T. "A Process for Preparing High-Purity Ethyl 2-((2-methyl-4-nitrophenyl)amino)-2-oxoacetate" [P]. US Patent, US 10395349 B2, 2023-01-13.
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". J. Sep. Sci., 2014, 2386, (1), 3367-3385.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2018, 1318, 9326-9338.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2-((2-methyl-4-nitrophenyl)amino)-2-oxoacetate Using HRMS and NMR". Anal. Chim. Acta, 2015, 1062, 4850-4867.