9(Z),11(E),13(Z)-Octadecatrienoic acid CAS 544-72-9

Purity >95%In StockPharmaceutical Standards
CAS No.544-72-9
Molecular FormulaC18H30O2
Molecular Weight278.43 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

9(Z),11(E),13(Z)-Octadecatrienoic acid CAS 544-72-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 278.43 g/mol gives 9(Z),11(E),13(Z)-Octadecatrienoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 9(Z),11(E),13(Z)-Octadecatrienoic acid (CAS 544-72-9), a certified reference material (molecular formula C18H30O2, MW 278.43 g/mol) for analytical method development and quality control.

Owing to a steroid core, a hydroxyl group, an ether linkage, 9(Z),11(E),13(Z)-Octadecatrienoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 278.43 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), 9(Z),11(E),13(Z)-Octadecatrienoic 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
Purity>95%
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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