Zonisamide impurity 9 CAS CATO-C4X-17859
| CAS No. | CATO-C4X-17859 |
| Molecular Formula | C10H11NO4S |
| Molecular Weight | 241.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Zonisamide impurity 9 (CAS CATO-C4X-17859, C10H11NO4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Zonisamide impurity 9 (C10H11NO4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 241.26 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Zonisamide impurity 9 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H11NO4S |
| Molecular Weight | 241.26 g/mol |
| Purity | 97%+ |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Zonisamide Standards
- Zonisamide Impurity 1 (CAS CATO-C4X-17851)
- Zonisamide sodium salt (CAS 68291-98-5)
- Zonisamide Chloride (CAS 73101-65-2)
- Zonisamide Impurity 17 (CAS CATO-C4X-178517)
- Zonisamide impurity 8 (CAS CATO-C4X-17858)
- Zonisamide Impurity 4 (CAS 68292-02-4)
- Zonisamide-d4 (CAS 1020720-04-0)
- Zonisamide USP Related Compound C (CAS 1217201-89-2)
Recommended Standards
- 952578-08-4 (2E)-1-(3-Aminophenyl)-3-(4-fluorophenyl)prop-2-en-1-one MFCD01158832 (CAS 952578-08-4)
- Entrectinib Impurity 2 (CAS 1108745-33-0)
- Tert-butyl (S)-(1-(5-fluoropyrimidin-2-yl)ethyl)carbamate (CAS 905587-30-6)
- (5-Nitrothiophen-2-yl)(piperazin-1-yl)methanone (CAS 104554-65-6)
- Ropivacaine EP Impurity F (CAS 1945965-95-6)
- Empagliflozin Impurity 75 (CAS 915095-87-3)
- Cefdinir Impurity 62 (CAS CATO-C4X-121062)
- Indobufen Impurity 33 (CAS 937671-41-5)
- Amylin (8-37) (mouse, rat) (CAS 138398-61-5)
- 3-Methoxypropanamide (CAS 15438-67-2)
- 1-((5-Methyl-2-(3-(trifluoromethyl)phenyl)oxazol-4-yl)methyl)pyrrolidin-3-amine (CAS 1332199-28-6)
- N-(2-(2-Bromo-1H-indol-3-yl)ethyl)acetamide (CAS 156997-99-8)
- Cis-2-methyl-4a-phenyldecahydroisoquinoline (CAS 50790-97-1)
- Semaglutide Impurity 13 (CAS CATO-C4X-222613)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com