Ethyl 11(Z),14(Z),17(Z)-eicosatrienoate CAS 99660-95-4

Purity >90%In StockPharmaceutical Standards
CAS No.99660-95-4
Molecular FormulaC22H38O2
Molecular Weight334.54 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ethyl 11(Z),14(Z),17(Z)-eicosatrienoate CAS 99660-95-4 chemical structure

Description

Ethyl 11(Z),14(Z),17(Z)-eicosatrienoate (CAS 99660-95-4) is a high-purity analytical reference standard with the molecular formula C22H38O2 and a molecular weight of 334.54 g/mol.

Structurally, Ethyl 11(Z),14(Z),17(Z)-eicosatrienoate (C22H38O2) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 334.54 g/mol, it falls into the moderately-high-molecular-weight range. 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

Molecular FormulaC22H38O2
Molecular Weight334.54 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)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1985

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