(6Z,9Z,12Z,15Z)-octadeca-6,9,12,15-tetraenoic acid CAS 20290-75-9
| CAS No. | 20290-75-9 |
| Molecular Formula | C18H28O2 |
| Molecular Weight | 276.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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.
(6Z,9Z,12Z,15Z)-octadeca-6,9,12,15-tetraenoic acid (CAS 20290-75-9), molecular formula C18H28O2 and molecular weight 276.41 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (6Z,9Z,12Z,15Z)-octadeca-6,9,12,15-tetraenoic acid (C18H28O2) is characterized by a steroid core, 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 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).
As a certified reference material (CRM), (6Z,9Z,12Z,15Z)-octadeca-6,9,12,15-tetraenoic 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 Formula | C18H28O2 |
| Molecular Weight | 276.41 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >90% |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Recommended Standards
- 84-47-9 9,10-Anthracenedione, 2-(1,1-dimethylethyl)- Anthraquinone, 2-tert-butyl- (8CI) 2-tert-Butylanthraquinone beta-tert-Butylanthraquinone 2-tert-Butyl-9,10-anthraquinone EINECS 201-531-2 NSC 30548 (CAS 84-47-9)
- Ibuprofen Impurity 91 (CAS CATO-C4X-108291)
- 3-{2-[(1-benzyl-6-methoxyquinolinium-2-yl)methylidene]-2h-1|E4,3-benzoselenazol-1-yl}propane-1-sulfonate 64709-55-3 AR-1F1377 (CAS 64709-55-3)
- Calcipotriol Impurity 40 (CAS 2106840-41-7)
- 1-Methyl-1H-pyrazolo[3,4-d]pyrimidine-4;6-diamine (CAS 108272-88-4)
- 6,13-Bis((triisopropylsilyl)ethynyl)pentacene 373596-08-8 6,13-Bis(triisopropylsilylethynyl)pentacene (CAS 373596-08-8)
- 4-fluoro-2-methoxynicotinaldehyde (CAS 1256835-96-7)
- 3-Aminocyclobutanone hydrochloride (CAS 1035374-20-9)
- 2-(4-Methyl-2-nitrophenoxy)butanoic acid (CAS 869948-83-4)
- 2-((2-Methoxy-4-nitrophenyl)imino)thiazolidin-4-one (CAS 692280-80-1)
- (7S,8R)-2-Amino-7,8-dimethyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one (CAS 2673369-62-3)
- Bilastine Impurity 62 DiHCl (CAS 1789305-52-7(free base))
- 4-methoxy-7H-pyrrolo[2,3-d]pyrimidine (CAS 4786-76-9)
- Tau Peptide (304-318) trifluoroacetate salt (CAS 330456-49-0)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com