PEG (n=18) CAS 4445-03-8

Purity 97%+In StockPharmaceutical Standards
CAS No.4445-03-8
Molecular FormulaC36H74O19
Molecular Weight810.96 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

PEG (n=18) CAS 4445-03-8 chemical structure

Description

The molecular framework of PEG (n=18) (C36H74O19) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.

PEG (n=18) (CAS 4445-03-8), molecular formula C36H74O19 and molecular weight 810.96 g/mol, is a CATO reference standard with documented purity and traceability.

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.

As a certified reference material (CRM), PEG (n=18) meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC36H74O19
Molecular Weight810.96 g/mol
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)0.0
CAS Registry Year (est.)1958

Recommended Standards

Why CATO?