发明人杨光,沈红梅,刘建华. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111464578 A, 授权公告日 2021-05-14.
发明人冯建国,胡光,黄志刚. "Method for the Synthesis of 4-((2-Carbamothioyl-5-(4-nitrophenyl)-3-oxo-2,3-dihydro-1H-pyrazol-4-yl)diazenyl)benzoic acid" [P]. 中国发明专利, 专利号 CN 114748483 A, 授权公告日 2020-08-15.
发明人赵玉洁,高志强,郭海燕. "A Process for Preparing High-Purity 4-((2-Carbamothioyl-5-(4-nitrophenyl)-3-oxo-2,3-dihydro-1H-pyrazol-4-yl)diazenyl)benzoic acid" [P]. 中国发明专利, 专利号 CN 110208112 A, 授权公告日 2018-06-09.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2010, 1976, (12), 74-79.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2013, 2391, (2), 352-381.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 4-((2-Carbamothioyl-5-(4-nitrophenyl)-3-oxo-2,3-dihydro-1H-pyrazol-4-yl)diazenyl)benzoic acid Using HRMS and NMR". Food Chem., 2025, 978, (6), 5386-5396.