Zonisamide Impurity 14 CAS 23008-68-6
| CAS No. | 23008-68-6 |
| Molecular Formula | C9H8N2O2 |
| Molecular Weight | 176.17 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 Zonisamide Impurity 14.
As a process- or degradation-related impurity, Zonisamide Impurity 14 (CAS 23008-68-6, C9H8N2O2) 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 14 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 176.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C9H8N2O2 |
| Molecular Weight | 176.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 2 |
Related Zonisamide Standards
- Zonisamide Impurity 5 (CAS 4865-84-3)
- Zonisamide impurity 12 (CAS 2320-33-4)
- Zonisamide Impurity 16 (CAS 59899-89-7)
- Zonisamide impurity 11 (CAS CATO-C4X-178511)
- Zonisamide Impurity 13 (CAS 1196-29-8)
- Zonisamide Impurity 15 (CAS 23008-65-3)
- Zonisamide (CAS 68291-97-4)
- Zonisamide Related Compound A (CAS 342623-49-8)
Recommended Standards
- Rizatriptan Impurity 13 (CAS 91192-27-7)
- Granisetron EP Impurity D (CAS 50890-83-0)
- Levodopa Impurity 13 (CAS 1176784-51-2)
- Granisetron EP Impurity G (CAS 34252-44-3)
- Tirofiban Impurity 24 (CAS 149490-61-9)
- Upadacitinib Impurity 133 (CAS CATO-C4X-2405133)
- Tenofovir disoproxil Impurity 137 (CAS CATO-C4X-1076137)
- N-(2-methoxybenzyl)-4-((2-oxo-5-(trifluoromethyl)pyridin-1(2H)-yl)methyl)benzamide (CAS 339025-46-6)
- 2-Methyl-N-[(1S)-2-(1-methylethylidene)-8-azaspiro[4.5]dec-1-yl]-2-propanesulfinamide (CAS 2811655-52-2)
- 2,5-Dimethoxypyrimidine (CAS 16290-94-1)
- Ceftiofur-d3 Sodium Salt (CAS 104010-37-9 (unlabelled))
- 7,7-Dimethyl-7,8-dihydroquinolin-5(6H)-one (CAS 5220-63-3)
- Tert-butyl (1R,3R)-1-amino-3-hydroxy-8-azaspiro[4.5]Decane-8-carboxylate (CAS 2306255-64-9)
- D-[Phe]6-Semaglutide (CAS CATO-CPTD788633)
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