Roberts E F, Johnson M A, Yamamoto T. "Method for the Synthesis of 4-Bromo-2H-pyrazole-3-carboxylic acid" [P]. US Patent, US 10279522 B2, 2015-10-25.
发明人韩伟,孙丽萍,赵玉洁. "A Process for Preparing High-Purity 4-Bromo-2H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114112783 A, 授权公告日 2018-06-18.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2023, 2232, 6015-6029.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2021, 567, (12), 1663-1690.