O'Brien P Q, Mueller T, Kumar R. "Method for the Synthesis of Pitavastatin Impurity 21" [P]. US Patent, US 9333829 B2, 2018-11-11.
Schröder R, Anderson J P, Stevens L M. "A Process for Preparing High-Purity Pitavastatin Impurity 21" [P]. US Patent, US 11288445 B2, 2016-07-22.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of 匹伐他汀杂质21 in Pharmaceutical Formulations". J. Sep. Sci., 2019, 1136, (3), 6624-6654.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of 匹伐他汀杂质21 as an Impurity". Anal. Chem., 2015, 167, (5), 8455-8469.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of Pitavastatin Impurity 21 Using HRMS and NMR". Sci. Total Environ., 2016, 1535, (6), 9276-9286.