Hughes D C, Schröder R, Stevens L M. "Method for the Synthesis of Bis-(m-PEG4)-amidohexanoic acid" [P]. US Patent, US 11227050 B2, 2025-08-07.
Roberts E F, Williams B T, O'Brien P Q. "A Process for Preparing High-Purity Bis-(m-PEG4)-amidohexanoic acid" [P]. US Patent, US 11723444 B2, 2020-07-03.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2022, 1900, (9), 5916-5929.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2018, 2335, 9638-9667.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of Bis-(m-PEG4)-amidohexanoic acid Using HRMS and NMR". Biomed. Chromatogr., 2022, 1809, (5), 8277-8294.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2020, 2379, 7050-7075.