Spiramycin EP Impurity G CAS CATO-C4X-23256
| CAS No. | CATO-C4X-23256 |
| Molecular Formula | C46H78N2O15 |
| Molecular Weight | 898.54 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.
Spiramycin EP Impurity G (CAS CATO-C4X-23256) is a certified pharmaceutical impurity reference standard with the molecular formula C46H78N2O15 and a molecular weight of 898.54 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Spiramycin EP Impurity G is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 898.54 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 certified reference material (CRM), Spiramycin EP Impurity G 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 | C46H78N2O15 |
| Molecular Weight | 898.54 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Spiramycin Standards
- Spiramycin III (CAS 24916-52-7)
- Spiramycin EP Impurity C (CAS CATO-C4X-23253)
- Spiramycin EP Impurity B (CAS CATO-C4X-23252)
- Spiramycin I (CAS CATO-C4X-2325)
- Spiramycin EP Impurity D (CAS CATO-C4X-23254)
- Spiramycin EP Impurity D (CAS 87708-39-2)
- Spiramycin EP Impurity B (CAS 249930-66-3)
- Spiramycin (CAS 8025-81-8)
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