Park J H, Thompson G K, Hughes D C. "一种阿法替尼杂质22的合成方法" [P]. US Patent, US 11308201 B2, 2020-02-21.
Klinger H, Kumar R, Schröder R. "Method for the Synthesis of Afatinib Impurity 22" [P]. US Patent, US 9872600 B2, 2025-01-23.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of 阿法替尼杂质22 in Pharmaceutical Formulations". Environ. Sci. Technol., 2024, 2122, (12), 2380-2403.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 阿法替尼杂质22 as an Impurity". Chemosphere, 2013, 2264, (8), 8567-8588.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Afatinib Impurity 22 Using HRMS and NMR". J. Agric. Food Chem., 2011, 428, 4951-4972.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate 阿法替尼杂质22 Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2023, 1008, (11), 92-105.