发明人李文辉,高志强,徐明华. "一种乙哌立松杂质21的合成方法" [P]. 中国发明专利, 专利号 CN 116284869 A, 授权公告日 2018-12-21.
O'Brien P Q, Lee S K, Stevens L M. "Method for the Synthesis of Eperisone impurity 21" [P]. US Patent, US 11792078 B2, 2019-12-09.
Lefèvre J P, Nowak P, Mueller T C. "A Process for Preparing High-Purity Eperisone impurity 21" [P]. European Patent, EP 3915424 A1, 2024-12-09.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 乙哌立松杂质21 in Pharmaceutical Formulations". J. Nat. Prod., 2017, 2327, 8872-8876.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 乙哌立松杂质21 as an Impurity". Anal. Chem., 2015, 1104, 1309-1331.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of Eperisone impurity 21 Using HRMS and NMR". J. Chromatogr. A, 2018, 1870, 473-497.