Zonisamide Impurity 15 CAS 23008-65-3
| CAS No. | 23008-65-3 |
| Molecular Formula | C11H11NO3 |
| Molecular Weight | 205.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Zonisamide Impurity 15 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.
As a process- or degradation-related impurity, Zonisamide Impurity 15 (CAS 23008-65-3, C11H11NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Zonisamide Impurity 15 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 205.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C11H11NO3 |
| Molecular Weight | 205.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
Related Zonisamide Standards
- Zonisamide (CAS 68291-97-4)
- Zonisamide Related Compound A (CAS 342623-49-8)
- Zonisamide-13C2-15N (CAS 1188265-58-8)
- Zonisamide impurity 11 (CAS CATO-C4X-178511)
- Zonisamide-d4 (CAS 1020720-04-0)
- Zonisamide Impurity 16 (CAS 59899-89-7)
- Zonisamide Impurity 4 (CAS 68292-02-4)
- Zonisamide impurity 8 (CAS CATO-C4X-17858)
Recommended Standards
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- Vilazodone impurity 17 (CAS CATO-C4X-135517)
- Cabozantinib Impurity 12 (CAS 145591-80-6)
- Eltrombopag Impurity 89 (CAS 1097777-60-0)
- Opicapone impurity 13 (CAS CATO-C4X-240413)
- Faropenem Impurity 44 (CAS CATO-C4X-128944)
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- 5,6-Dichloro-1-methyl-1H-pyrazolo[3,4-b]pyridine (CAS 1707610-10-3)
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- N-(2-fluoro-3-methoxyphenyl)thietan-3-amine (CAS 1881369-12-5)
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- 1-(2-Methoxy-5-methylphenyl)-1h-1,2,3,4-tetrazole-5-thiol (CAS 379726-45-1)
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