Klinger H, Park J H, Thompson G K. "一种5-bromo-7-chloro-2-methyl-1,3-benzoxazole的合成方法" [P]. US Patent, US 10064381 B2, 2023-10-28.
Björnsson E, Martínez F, Mueller T C. "Method for the Synthesis of 5-bromo-7-chloro-2-methyl-1,3-benzoxazole" [P]. European Patent, EP 3039816 A1, 2024-11-28.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of 5-bromo-7-chloro-2-methyl-1,3-benzoxazole in Pharmaceutical Formulations". J. Chromatogr. A, 2022, 2272, 5091-5099.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of 5-bromo-7-chloro-2-methyl-1,3-benzoxazole as an Impurity". Talanta, 2021, 2334, (2), 8993-9001.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 5-bromo-7-chloro-2-methyl-1,3-benzoxazole Using HRMS and NMR". Molecules, 2015, 312, 5080-5084.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate 5-bromo-7-chloro-2-methyl-1,3-benzoxazole Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2014, 354, (4), 3733-3740.