Johnson M A, Lee S K, Klinger H. "一种的合成方法" [P]. US Patent, US 10668044 B2, 2016-01-27.
Yamamoto T, Klinger H, Kumar R. "Method for the Synthesis of Tos-PEG4-t-butyl ester" [P]. US Patent, US 11666623 B2, 2023-12-02.
Fischer A B, Hughes D C, Thompson G K. "A Process for Preparing High-Purity Tos-PEG4-t-butyl ester" [P]. US Patent, US 11713572 B2, 2018-01-02.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2024, 1462, 8896-8922.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2025, 1844, 9443-9464.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of Tos-PEG4-t-butyl ester Using HRMS and NMR". Anal. Chim. Acta, 2018, 284, 483-490.