Johnson M A, Hughes D C, O'Brien P Q. "一种索非那新EP杂质C的合成方法" [P]. US Patent, US 9269352 B2, 2020-02-12.
Park J H, Klinger H, Kumar R. "Method for the Synthesis of Solifenacin EP Impurity C" [P]. US Patent, US 10481302 B2, 2024-12-14.
Patel M V, Brown S R, Yamamoto T. "A Process for Preparing High-Purity Solifenacin EP Impurity C" [P]. US Patent, US 11872101 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 索非那新EP杂质C in Pharmaceutical Formulations". Phytochemistry, 2019, 253, (12), 4838-4849.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of 索非那新EP杂质C as an Impurity". Chemosphere, 2020, 2277, (7), 2361-2367.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Solifenacin EP Impurity C Using HRMS and NMR". Talanta, 2015, 1615, 1661-1675.