Azido-PEG3-S-PEG4-t-butyl ester CAS 2055041-19-3

Description

The occurrence of Azido-PEG3-S-PEG4-t-butyl ester is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Azido-PEG3-S-PEG4-t-butyl ester (CAS 2055041-19-3), a certified reference material (molecular formula C23H45N3O9S, MW 539.68 g/mol) for analytical method development and quality control.

Azido-PEG3-S-PEG4-t-butyl ester (C23H45N3O9S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

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