19-Methoxy-19-oxononadecanoic acid CAS 72849-43-5

Purity 97%+In StockPharmaceutical Standards
CAS No.72849-43-5
Molecular FormulaC20H38O4
Molecular Weight342.51 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

19-Methoxy-19-oxononadecanoic acid CAS 72849-43-5 chemical structure

Description

CATO supplies 19-Methoxy-19-oxononadecanoic acid (CAS 72849-43-5), a certified reference material (molecular formula C20H38O4, MW 342.51 g/mol) for analytical method development and quality control.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 19-Methoxy-19-oxononadecanoic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 342.51 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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 FormulaC20H38O4
Molecular Weight342.51 g/mol
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1977

Related Methoxy Standards

Recommended Standards

Why CATO?