Yamamoto T, Brown S R, Park J H. "一种托伐替尼杂质18的合成方法" [P]. US Patent, US 11759325 B2, 2017-10-20.
发明人刘建华,赵玉洁,唐晓军. "Method for the Synthesis of Tofacitinib Impurity 18" [P]. 中国发明专利, 专利号 CN 113298525 B, 授权公告日 2016-12-18.
发明人唐晓军,罗永刚,郑宇鹏. "A Process for Preparing High-Purity Tofacitinib Impurity 18" [P]. 中国发明专利, 专利号 CN 111929267 A, 授权公告日 2025-03-13.
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 托伐替尼杂质18 in Pharmaceutical Formulations". J. Nat. Prod., 2023, 2307, (3), 4856-4880.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of 托伐替尼杂质18 as an Impurity". J. Sep. Sci., 2013, 1582, 6300-6310.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of Tofacitinib Impurity 18 Using HRMS and NMR". J. Agric. Food Chem., 2017, 330, (5), 4133-4141.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate 托伐替尼杂质18 Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2014, 2021, 1888-1899.