Azithromycin impurity 53 CAS 152727-04-3
| CAS No. | 152727-04-3 |
| Molecular Formula | C38H70N2O11 |
| Molecular Weight | 730.97 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Azithromycin impurity 53 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.
Azithromycin impurity 53 (CAS 152727-04-3) is a certified pharmaceutical impurity reference standard with the molecular formula C38H70N2O11 and a molecular weight of 730.97 g/mol.
Based on its molecular formula C38H70N2O11, Azithromycin impurity 53 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 730.97 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).
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 | C38H70N2O11 |
| Molecular Weight | 730.97 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2000 |
| Nitrogen Atoms | 2 |
Related Azithromycin Standards
- Azithromycin CP Impurity Q (CAS 99290-97-8)
- Azithromycin CP Impurity R (CAS 161193-44-8)
- Azithromycin Impurity 23 (CAS CATO-C4X-100323)
- Azithromycin Impurity 50 (CAS CATO-C4X-100350)
- Azithromycin EP Impurity B (CAS 307974-61-4)
- Azithromycin EP Impurity A (CAS 76801-85-9)
- Azithromycin EP Impurity C (CAS 620169-47-3)
- Azithromycin EP Impurity I (CAS 172617-84-4)
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