Betaxolol Impurity 11 CAS CATO-C4X-155911
| CAS No. | CATO-C4X-155911 |
| Molecular Formula | C18H29NO3 |
| Molecular Weight | 307.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Betaxolol Impurity 11 (CAS CATO-C4X-155911, C18H29NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Betaxolol Impurity 11 (C18H29NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), Betaxolol Impurity 11 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 | C18H29NO3 |
| Molecular Weight | 307.43 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Betaxolol Standards
- Betaxolol (CAS 63659-18-7)
- Betaxolol EP Impurity E (CAS 1329613-85-5)
- Betaxolol-d5 (CAS 1189957-99-0)
- Betaxolol Impurity 15 (CAS 87549-35-7)
- Betaxolol Impurity 14 (CAS CATO-C4X-155914)
- Betaxolol Impurity 21 (CAS CATO-C4X-155921)
- Betaxolol Impurity 20 (CAS CATO-C4X-155920)
- Betaxolol Impurity 16 (CAS CATO-C4X-155916)
Recommended Standards
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- Hydroxy Terbinafine (CAS 162227-13-6)
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- Eldecalcitol Impurity 6 (CAS 2569209-09-0)
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- D-Ser39-Tirzepatide (CAS CATO-CPTD788694)
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