(9Z,11E)-Octadecadienoic Acid CAS 2540-56-9

Purity >75%In StockPharmaceutical Standards
CAS No.2540-56-9
Molecular FormulaC18H32O2
Molecular Weight280.45 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(9Z,11E)-Octadecadienoic Acid CAS 2540-56-9 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 (9Z,11E)-Octadecadienoic Acid.

(9Z,11E)-Octadecadienoic Acid (CAS 2540-56-9), molecular formula C18H32O2 and molecular weight 280.45 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of (9Z,11E)-Octadecadienoic Acid (C18H32O2) 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.

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

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 FormulaC18H32O2
Molecular Weight280.45 g/mol
Purity>75%
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1957

Recommended Standards

Why CATO?