Oryzanol Impurity 18 CAS 1236211-55-4
| CAS No. | 1236211-55-4 |
| Molecular Formula | C41H60O5 |
| Molecular Weight | 632.91 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Oryzanol Impurity 18 (CAS 1236211-55-4) is a certified pharmaceutical impurity reference standard with the molecular formula C41H60O5 and a molecular weight of 632.91 g/mol.
Based on its molecular formula C41H60O5, Oryzanol Impurity 18 contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 632.91 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Oryzanol Impurity 18 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 | C41H60O5 |
| Molecular Weight | 632.91 g/mol |
| Purity | ≥95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
Related Oryzanol Standards
- Oryzanol Impurity 2 (CAS CATO-C4X-28612)
- Oryzanol Impurity 5 (CAS CATO-C4X-28615)
- Oryzanol C (24-Methylene Cycloartanyl Ferulate) (CAS 469-36-3)
- Oryzanol Impurity 4 (CAS CATO-C4X-28614)
- Oryzanol Impurity 1 (CAS 545386-92-3)
- Oryzanol impurity 15 (CAS 286011-35-6)
- Oryzanol Impurity 17 (CAS 286011-27-6)
- Oryzanol A (Cycloartenyl Ferulate) (CAS 21238-33-5)
Recommended Standards
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