Levocetirizine Impurity 76 CAS CATO-C4X-108376
| CAS No. | CATO-C4X-108376 |
| Molecular Formula | C33H45ClN2O13 |
| Molecular Weight | 713.17 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.
As a process- or degradation-related impurity, Levocetirizine Impurity 76 (CAS CATO-C4X-108376, C33H45ClN2O13) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Levocetirizine Impurity 76 (C33H45ClN2O13) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 713.17 g/mol, it falls into the high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), Levocetirizine Impurity 76 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 | C33H45ClN2O13 |
| Molecular Weight | 713.17 g/mol |
| Purity | 95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Levocetirizine Standards
- Levocetirizine Lactose Ester (CAS CATO-C4X-108315)
- Levocetirizine Impurity 81 (CAS CATO-C4X-108381)
- Levocetirizine Impurity 52 (CAS CATO-C4X-108352)
- Levocetirizine Impurity 71 (CAS CATO-C4X-108371)
- Levocetirizine Impurity 78 (CAS CATO-C4X-108378)
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- Levocetirizine Impurity 73 (CAS CATO-C4X-108373)
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