Sørensen M, Lefèvre J P, Jørgensen K. "一种的合成方法" [P]. European Patent, EP 3225002 A1, 2019-11-26.
Schröder R, Kumar R, Mueller T. "Method for the Synthesis of 1-Phenylpyrazole-4-sulfonic acid" [P]. US Patent, US 11841104 B2, 2018-01-06.
发明人沈红梅,唐晓军,钱学锋. "A Process for Preparing High-Purity 1-Phenylpyrazole-4-sulfonic acid" [P]. 中国发明专利, 专利号 CN 109801329 B, 授权公告日 2022-04-24.
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". Anal. Chem., 2011, 777, 874-883.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2021, 2345, 1874-1893.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 1-Phenylpyrazole-4-sulfonic acid Using HRMS and NMR". J. Chromatogr. A, 2016, 1564, 8030-8044.