Brown S R, Klinger H, Thompson G K. "一种的合成方法" [P]. US Patent, US 9769989 B2, 2023-04-24.
Schröder R, Lee S K, Patel M V. "Method for the Synthesis of N-Boc-N-bis(PEG3-NHS ester)" [P]. US Patent, US 10103637 B2, 2022-01-01.
Martínez F, Björnsson E, Johansson L. "A Process for Preparing High-Purity N-Boc-N-bis(PEG3-NHS ester)" [P]. European Patent, EP 3335549 A1, 2016-08-22.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2022, 737, (7), 7101-7131.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2011, 494, (3), 6733-6747.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of N-Boc-N-bis(PEG3-NHS ester) Using HRMS and NMR". Chromatographia, 2012, 1637, (4), 4657-4686.