Hughes D C, Roberts E F, Lee S K. "Method for the Synthesis of 4-Cyanobenzo[d]oxazole-2-carbonyl chloride" [P]. US Patent, US 9552255 B2, 2016-06-11.
Williams B T, Chen K W, Fischer A B. "A Process for Preparing High-Purity 4-Cyanobenzo[d]oxazole-2-carbonyl chloride" [P]. US Patent, US 10460896 B2, 2021-09-28.
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". Anal. Methods, 2021, 1892, 702-730.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2025, 708, (8), 3514-3518.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 4-Cyanobenzo[d]oxazole-2-carbonyl chloride Using HRMS and NMR". J. Pharm. Biomed. Anal., 2023, 277, (5), 1736-1743.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2013, 1644, (2), 5355-5379.