Oryzanol Impurity 8 CAS 20972-08-1
| CAS No. | 20972-08-1 |
| Molecular Formula | C37H54O4 |
| Molecular Weight | 562.82 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Oryzanol Impurity 8 is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Oryzanol Impurity 8 (CAS 20972-08-1) is a certified pharmaceutical impurity reference standard with the molecular formula C37H54O4 and a molecular weight of 562.82 g/mol.
Oryzanol Impurity 8 (C37H54O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Oryzanol Impurity 8 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 | C37H54O4 |
| Molecular Weight | 562.82 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related Oryzanol Standards
- Oryzanol Impurity 7 (CAS 20972-07-0)
- Oryzanol Impurity 7 (CAS 786680-88-4)
- Oryzanol Impurity 14 (CAS 106774-77-0)
- Oryzanol Impurity 16 (CAS 286011-30-1)
- Oryzanol Impurity 13 (CAS 117857-70-2)
- Oryzanol impurity 15 (CAS 286011-35-6)
- Oryzanol Impurity 17 (CAS 286011-27-6)
- Oryzanol A (Cycloartenyl Ferulate) (CAS 21238-33-5)
Recommended Standards
- Methyl 2,3,4-Tri-O-isobutyryl-1-O-trichloroacetimidoyl-α-D-glucopyranuronate (CAS 150607-96-8)
- Rhodoxanthin (CAS 116-30-3)
- Baricitinib Impurity 108 (CAS CATO-C4X-2260108)
- 2,5-Bis(dodecyloxy)terephthalohydrazide (CAS 165898-16-8)
- Lornoxicam Impurity 18 (CAS CATO-C4X-201618)
- Tofacitinib Impurity 61 (CAS CATO-C4X-107961)
- Atorvastatin impurity 158 (CAS 1421760-64-6)
- Methyl 5-hydroxy-8,9-dimethoxy-2,4-dimethylbenzo[c][2,7]naphthyridine-1-carboxylate (CAS 384815-57-0)
- N-Carboxybenzyl Histamine (CAS 74058-75-6)
- N-[4-(aminomethyl)phenyl]-N-methylpyridine-4-carboxamide (CAS 1095067-87-0)
- tert-Butyl (2-aminoethyl)(2,2,3,3,9,9,10,10-octamethyl-4,8-dioxa-3,9-disilaundecan-6-yl)carbamate (CAS 1951441-97-6)
- IRMOF-9 (CAS 473981-45-2)
- Pemafibrate Impurity 90 (CAS CATO-C4X-290390)
- Tau Peptide (306-317) trifluoroacetate salt (CAS 1003007-59-7)
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