Ergocalciferol Impurity 4 (Mixture of Diastereomers) CAS CATO-C4X-17794
| CAS No. | CATO-C4X-17794 |
| Molecular Formula | C28H42O |
| Molecular Weight | 394.63 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, a hydroxyl group, an ether linkage, Ergocalciferol Impurity 4 (Mixture of Diastereomers) is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 394.63 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 process- or degradation-related impurity, Ergocalciferol Impurity 4 (Mixture of Diastereomers) (CAS CATO-C4X-17794, C28H42O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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), Ergocalciferol Impurity 4 (Mixture of Diastereomers) 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 | C28H42O |
| Molecular Weight | 394.63 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Ergocalciferol Standards
- Ergocalciferol EP Impurity F (CAS CATO-C4X-177922)
- Ergocalciferol EP Impurity D (CAS 469-06-7)
- Ergocalciferol EP Impurity A (CAS 51744-66-2)
- Ergocalciferol EP Impurity E (CAS 115-61-7)
- Ergocalciferol EP Impurity B (CAS 57-87-4)
- Ergocalciferol Impurity 01 (CAS 55812-80-1)
- Ergocalciferol Impurity 3 (CAS 5757-76-6)
Recommended Standards
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