Molekula
Zonisamide
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Zonisamide is an anticonvulsant and neuroprotective agent primarily used to treat epilepsy and prevent migraines. It is also studied for its potential in neurodegenerative conditions. This white crystalline powder has a CAS number of 68291-97-4, molecular formula C8H8N2O3S, and a molecular weight of 212.23. It should be stored at ambient temperatures and handled with caution, as it carries a signal word of Warning. Molekula supplies Zonisamide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White to off-white solid |
| Identification | Conforms to reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Odour | Odorless |
| Melting Point | 160-163 °C |
| Water Solubility | 0.8 mg/L, temp not specified |
| Vapour Pressure | 3.3 × 10⁻⁶ mmHg at 25 °C (Estimated) |
| pKa | pKa = 10.2 |
| log P (octanol/water) | 0.36 |
Source: PubChem CID 5734 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 54576333 |
| CAS Number | 68291-97-4 |
| IUPAC Name | 1,2-benzoxazol-3-ylmethanesulfonamide |
| Molecular Formula | C8H8N2O3S |
| Molecular Weight | 212.23 |
| Exact Mass | 212.0256 |
| SMILES | C1=CC=C2C(=C1)C(=NO2)CS(=O)(=O)N |
| InChIKey | UBQNRHZMVUUOMG-UHFFFAOYSA-N |
| InChI | InChI=1S/C8H8N2O3S/c9-14(11,12)5-7-6-3-1-2-4-8(6)13-10-7/h1-4H,5H2,(H2,9,11,12) |
| PubChem CID | 5734 |
| REACH Code | Y110 |
| HTS Code | 29359095 |
| Tariff Code | 2935909099 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H336 May cause drowsiness or dizziness
- H361 Suspected of damaging fertility or the unborn child
- H362 May cause harm to breast-fed children
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P263 Avoid contact during pregnancy/while nursing
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 1,2-Benzisoxazole-3-methanesulfonamide
- 1,2-benzoxazol-3-ylmethanesulfonamide
- 3-(Sulfamoylmethyl)-1,2-benzisoxazole
- Exceglan
- Excegram
- Excegran
- Zonegran
- ZONISADE
- Zonisamida
- Zonisamidum
Frequently asked questions
What is zonisamide primarily used for?
Zonisamide is primarily used as an anticonvulsant medication to treat epilepsy and as an adjunctive therapy for partial seizures.
What is the chemical formula and molecular weight of zonisamide?
The chemical formula is **C₈H₈N₂O₃S** and the molecular weight is **212.23 g/mol**.
How should zonisamide be stored?
Store zonisamide at **ambient temperature** in a dry, well-ventilated area, away from incompatible substances.
What grades or purity levels of zonisamide does Molekula supply?
Molekula supplies zonisamide in **pharmaceutical-grade (USP/EP/JP) and research-grade purity**—confirm specifications when ordering.
Can Molekula supply zonisamide in bulk quantities?
Yes, zonisamide is available in bulk, with minimum order quantities and packaging options tailored to your needs—contact sales for details.
What documentation is provided with a zonisamide order?
Each order includes a **Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.