Ethyl 6(Z),9(Z),12(Z),15(Z)-Hexadecatetraenoate CAS 845779-89-7

Purity >90%In StockPharmaceutical Standards
CAS No.845779-89-7
Molecular FormulaC18H28O2
Molecular Weight276.41 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ethyl 6(Z),9(Z),12(Z),15(Z)-Hexadecatetraenoate CAS 845779-89-7 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.

Ethyl 6(Z),9(Z),12(Z),15(Z)-Hexadecatetraenoate (CAS 845779-89-7) is a high-purity analytical reference standard with the molecular formula C18H28O2 and a molecular weight of 276.41 g/mol.

Ethyl 6(Z),9(Z),12(Z),15(Z)-Hexadecatetraenoate (C18H28O2) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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 FormulaC18H28O2
Molecular Weight276.41 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity>90%
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987

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