(4Z,7E,9E,13Z,16Z,19Z)-11-Hydroxydocosa-4,7,9,13,16,19-hexaenoic acid CAS 87018-59-5
| CAS No. | 87018-59-5 |
| Molecular Formula | C22H32O3 |
| Molecular Weight | 344.49 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.
(4Z,7E,9E,13Z,16Z,19Z)-11-Hydroxydocosa-4,7,9,13,16,19-hexaenoic acid (CAS 87018-59-5) is a high-purity analytical reference standard with the molecular formula C22H32O3 and a molecular weight of 344.49 g/mol.
(4Z,7E,9E,13Z,16Z,19Z)-11-Hydroxydocosa-4,7,9,13,16,19-hexaenoic acid (C22H32O3) 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 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).
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 | C22H32O3 |
| Molecular Weight | 344.49 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
Recommended Standards
- (3Z,6E,8E,12Z,15Z,18Z)-Docosa-3,6,8,12,15,18-hexaen-10-ol (CAS 90780-53-3)
- (4Z,7Z,10Z,12E,16Z,19Z)-14-Hydroxydocosa-4,7,10,12,16,19-hexaenoic acid (CAS 87042-40-8)
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- (4Z,7Z,10Z,13E,15E,19Z)-17-Hydroxydocosa-4,7,10,13,15,19-hexaenoic acid (CAS 90780-52-2)
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- Insulin Degludec Impurity 5 (CAS CATO-C4X-21575)
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