Tobramycin Impurity 21 CAS CATO-C4X-220021
| CAS No. | CATO-C4X-220021 |
| Molecular Formula | C30H49N7O14 |
| Molecular Weight | 731.75 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Tobramycin Impurity 21.
Tobramycin Impurity 21 (CAS CATO-C4X-220021) is a certified pharmaceutical impurity reference standard with the molecular formula C30H49N7O14 and a molecular weight of 731.75 g/mol.
Tobramycin Impurity 21 (C30H49N7O14) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Tobramycin Impurity 21 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 | C30H49N7O14 |
| Molecular Weight | 731.75 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 7 |
Related Tobramycin Standards
- Tobramycin Impurity 22 (CAS CATO-C4X-220022)
- Tobramycin Impurity 19 (CAS CATO-C4X-220019)
- Tobramycin Impurity 8 (CAS CATO-C4X-22008)
- Tobramycin Impurity 10 (CAS CATO-C4X-220010)
- Tobramycin Impurity 15 (CAS CATO-C4X-220016)
- Tobramycin Impurity 18 (CAS CATO-C4X-220018)
- Tobramycin Impurity 24 (CAS CATO-C4X-220024)
- Tobramycin Impurity N1 (CAS 51736-77-7)
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