methyl (9E,12Z)-octadeca-9,12-dienoate CAS 20221-27-6

Description

Compared with other compounds in its class, the molecular weight of 294.47 g/mol gives methyl (9E,12Z)-octadeca-9,12-dienoate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies methyl (9E,12Z)-octadeca-9,12-dienoate (CAS 20221-27-6), a certified reference material (molecular formula C19H34O2, MW 294.47 g/mol) for analytical method development and quality control.

The molecular framework of methyl (9E,12Z)-octadeca-9,12-dienoate (C19H34O2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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

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