Anderson J P, Hughes D C, Lee S K. "Method for the Synthesis of 4-Bromo-5-nitrothiophene-2-carboxylic acid" [P]. US Patent, US 11821578 B2, 2019-06-27.
发明人郭海燕,何建平,赵玉洁. "A Process for Preparing High-Purity 4-Bromo-5-nitrothiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117141350 B, 授权公告日 2023-03-22.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2011, 2291, (11), 9086-9109.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2021, 300, 3541-3567.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 4-Bromo-5-nitrothiophene-2-carboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2017, 2251, 505-524.