Roberts E F, Mueller T, Thompson G K. "Method for the Synthesis of Peficitinib Impurity 5【Discontinued,See C4X-28071】" [P]. US Patent, US 11576906 B2, 2020-01-09.
Lee S K, Klinger H, Schröder R. "A Process for Preparing High-Purity Peficitinib Impurity 5【Discontinued,See C4X-28071】" [P]. US Patent, US 10549886 B2, 2016-06-03.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of 培菲替尼杂质5【停用,见C4X-28071】 in Pharmaceutical Formulations". Anal. Chem., 2011, 1292, (3), 8218-8248.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of 培菲替尼杂质5【停用,见C4X-28071】 as an Impurity". Biomed. Chromatogr., 2018, 343, 5026-5053.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of Peficitinib Impurity 5【Discontinued,See C4X-28071】 Using HRMS and NMR". J. Sep. Sci., 2010, 788, (8), 5658-5683.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate 培菲替尼杂质5【停用,见C4X-28071】 Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2018, 1593, (6), 8343-8367.