Cholecalciferol Impurity 27 CAS CATO-C4X-158627
| CAS No. | CATO-C4X-158627 |
| Molecular Formula | C31H50O2 |
| Molecular Weight | 454.73 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Cholecalciferol Impurity 27 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.
Cholecalciferol Impurity 27 (CAS CATO-C4X-158627) is a certified pharmaceutical impurity reference standard with the molecular formula C31H50O2 and a molecular weight of 454.73 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Cholecalciferol Impurity 27 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 454.73 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 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.
Physical & Chemical Properties
| Molecular Formula | C31H50O2 |
| Molecular Weight | 454.73 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Cholecalciferol Standards
- Cholecalciferol EP Impurity F (Cholecalciferol Butyrate) (CAS 31316-20-8)
- Cholecalciferol Impurity 25 (CAS CATO-C4X-158625)
- Cholecalciferol Impurity 31 (CAS CATO-C4X-158631)
- Cholecalciferol Impurity 33 (CAS CATO-C4X-158633)
- Cholecalciferol Impurity 34 (CAS CATO-C4X-158634)
- Cholecalciferol Sulfate (CAS 10529-43-8)
- Cholecalciferol Impurity 18 (CAS CATO-C4X-158618)
- Cholecalciferol Impurity 19 (CAS CATO-C4X-158619)
Recommended Standards
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- Scopolamine Impurity 21 (CAS 2030294-83-6)
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