Johnson M A, Brown S R, Patel M V. "Method for the Synthesis of Avacopan Impurity 6" [P]. US Patent, US 10684764 B2, 2019-06-26.
Brown S R, Williams B T, Schröder R. "A Process for Preparing High-Purity Avacopan Impurity 6" [P]. US Patent, US 9566569 B2, 2018-11-08.
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 Avacopan杂质6 in Pharmaceutical Formulations". Talanta, 2020, 1328, (12), 8064-8090.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of Avacopan杂质6 as an Impurity". J. Agric. Food Chem., 2024, 449, 4004-4013.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of Avacopan Impurity 6 Using HRMS and NMR". Sci. Total Environ., 2022, 2410, (2), 1354-1384.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Avacopan杂质6 Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2012, 1077, 9648-9656.