mPEG-COOH,97% average Mw1000 CAS 67665-18-3

Purity 97%+In StockPharmaceutical Standards
CAS No.67665-18-3
Molecular FormulaC5H10O4
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

mPEG-COOH,97% average Mw1000 CAS 67665-18-3 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including mPEG-COOH,97% average Mw1000.

mPEG-COOH,97% average Mw1000 (CAS 67665-18-3) is a high-purity analytical reference standard with the molecular formula C5H10O4N and a molecular weight of 148.14 g/mol.

Structurally, mPEG-COOH,97% average Mw1000 (C5H10O4N) contains a carbohydrate-derived structure, an amide group. The molecule exhibits a degree of unsaturation (DBE) of 1.5, corresponding to approximately 1 ring(s) or double-bond equivalent(s). With a molecular weight of 148.14 g/mol, it falls into the low-molecular-weight range. 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

Molecular FormulaC5H10O4 N
Molecular Weight148.14 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)1.5
CAS Registry Year (est.)1976
Nitrogen Atoms1

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