(all-Z)-6,9,12,15,18-Heneicosapentaenoic acid ethyl ester CAS 131775-86-5
| CAS No. | 131775-86-5 |
| Molecular Formula | C23H36O2 |
| Molecular Weight | 344.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(all-Z)-6,9,12,15,18-Heneicosapentaenoic acid ethyl ester (CAS 131775-86-5), molecular formula C23H36O2 and molecular weight 344.53 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C23H36O2, (all-Z)-6,9,12,15,18-Heneicosapentaenoic acid ethyl ester 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 344.53 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C23H36O2 |
| Molecular Weight | 344.53 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
Recommended Standards
- ethyl (4Z,7Z,10Z,13Z,16Z)-henicosa-4,7,10,13,16-pentaenoate (CAS CATO-C4X-280642)
- (all-trans)-henicosa-6,9,12,15,18-pentaenoate (CAS CATO-C4X-289032)
- Deoxycholic acid Impurity 37 (CAS CATO-C4X-15837)
- Methyl cis-7,10,13,16,19-Docosapentaenoate (CAS 108698-02-8)
- tert-Butyl (3-bromothieno[2,3-b]pyridin-2-yl)carbamate (CAS 1042441-73-5)
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