(5E,9Z)-Octadeca-5,9-dienoic acid CAS 2441-53-4

Purity 97%+In StockPharmaceutical Standards
CAS No.2441-53-4
Molecular FormulaC18H30O2
Molecular Weight278.43 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(5E,9Z)-Octadeca-5,9-dienoic acid CAS 2441-53-4 chemical structure

Description

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.

(5E,9Z)-Octadeca-5,9-dienoic acid (CAS 2441-53-4), molecular formula C18H30O2 and molecular weight 278.43 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C18H30O2, (5E,9Z)-Octadeca-5,9-dienoic acid contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 278.43 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

As a certified reference material (CRM), (5E,9Z)-Octadeca-5,9-dienoic acid 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 FormulaC18H30O2
Molecular Weight278.43 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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Why CATO?