Lefèvre J P, Mueller T C, Martínez F. "一种的合成方法" [P]. European Patent, EP 3702411 A1, 2017-03-10.
Davis P L, Lee S K, Williams B T. "Method for the Synthesis of 2-Hydroxy-3-(3-methyl-5-oxo-2,5-dihydro-1H-pyrazol-1-yl)-5-sulfobenzoic acid" [P]. US Patent, US 9846796 B2, 2021-11-12.
Thompson G K, Stevens L M, Anderson J P. "A Process for Preparing High-Purity 2-Hydroxy-3-(3-methyl-5-oxo-2,5-dihydro-1H-pyrazol-1-yl)-5-sulfobenzoic acid" [P]. US Patent, US 11190874 B2, 2021-04-03.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2016, 411, 8438-8463.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2019, 1675, (4), 3521-3539.