| CAS No. | 98770-65-1 |
| Molecular Formula | C20H29ClO |
| Molecular Weight | 320.90 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
As a certified reference material (CRM), (5Z,8Z,11Z,14Z,17Z)-Icosa-5,8,11,14,17-pentaenoyl chloride 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.
(5Z,8Z,11Z,14Z,17Z)-Icosa-5,8,11,14,17-pentaenoyl chloride (CAS 98770-65-1), molecular formula C20H29ClO and molecular weight 320.90 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C20H29ClO, (5Z,8Z,11Z,14Z,17Z)-Icosa-5,8,11,14,17-pentaenoyl chloride contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 320.90 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
| Molecular Formula | C20H29ClO |
| Molecular Weight | 320.90 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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.) | 1985 |
| Halogen Content | Cl-containing |