
Pharmaceutical-grade Zonisamide (CAS 68291-97-4), min. 99%, supplied wholesale by Zyntex to licensed producers. Sulfonamide antiepileptic API for capsules, oral suspensions and veterinary products for dogs. CoA and SDS.
Zonisamide (C8H8N2O3S) is a white to pale yellow crystalline powder that is slightly soluble in water. It is a benzisoxazole sulfonamide with a long half-life, which allows once- or twice-daily dosing.
In addition, pharmaceutical companies use it in capsules and oral suspensions for epilepsy. Similarly, veterinary producers use it for epilepsy in dogs. Because it contains a sulfonamide group, patients with sulfonamide allergies need caution. Other antiepileptic APIs in our range also include Levetiracetam, Lamotrigine and Phenobarbital.
Notably, Zyntex supplies it from qualified API producers with lot-specific documentation, only to licensed pharmaceutical and veterinary companies.
Typical uses include, for example:
💊 Capsules
API for antiepileptic capsules.
🥄 Oral Suspensions
API for liquid formulations.
🐕 Veterinary Products
API for products for dogs.
🔬 Generic Development
Development as well as reference material.
| Parameter | Standard Value |
|---|---|
| Product Name | Zonisamide |
| CAS Number | 68291-97-4 |
| Molecular Formula / Weight | C8H8N2O3S / 212.23 g/mol |
| Assay (Purity) | Min. 99.0% |
| Appearance | White to pale yellow crystalline powder |
| Documents | CoA as well as SDS with every lot |
⚠️ Safety & Handling: Pharmacologically active substance that may damage the unborn child. Avoid inhalation of dust and contact with skin, and also wear gloves, eye protection and dust protection. Store in tightly closed containers in a cool, dry place. Always consult the Safety Data Sheet (SDS), because it contains the full classification and handling instructions.
Is zonisamide used in veterinary medicine?
Yes. Veterinary producers also use it for epilepsy in dogs.
Who can purchase this API?
Only pharmaceutical and veterinary companies holding the licenses required for API purchase as well as use.
How can I get a price and documents?
Prices depend on quantity, packaging and destination, so please contact us with your required volume. We then send a quotation together with the CoA and SDS.