Mueller T, Anderson J P, Roberts E F. "一种的合成方法" [P]. US Patent, US 9814218 B2, 2020-10-12.
发明人朱建伟,周伟,林芳. "Method for the Synthesis of (E)-4-((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)amino)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 113024846 B, 授权公告日 2015-02-16.
Lee S K, Fischer A B, Davis P L. "A Process for Preparing High-Purity (E)-4-((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)amino)-4-oxobut-2-enoic acid" [P]. US Patent, US 9951207 B2, 2018-11-12.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2012, 341, (7), 1840-1863.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2018, 2195, (8), 5502-5526.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of (E)-4-((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)amino)-4-oxobut-2-enoic acid Using HRMS and NMR". J. Nat. Prod., 2016, 225, (8), 2464-2472.