Tos-PEG4-CH2-Boc CAS 169751-73-9

Purity 97%+In StockPharmaceutical Standards
CAS No.169751-73-9
Molecular FormulaC21H34O9S
Molecular Weight462.55 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Tos-PEG4-CH2-Boc CAS 169751-73-9 chemical structure

Description

Tos-PEG4-CH2-Boc (CAS 169751-73-9) is a high-purity analytical reference standard with the molecular formula C21H34O9S and a molecular weight of 462.55 g/mol.

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Tos-PEG4-CH2-Boc is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 462.55 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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

Molecular FormulaC21H34O9S
Molecular Weight462.55 g/mol
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2005
Sulfur Atoms1

Recommended Standards

Why CATO?