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Chemical substance record

Zonisamide

68291-97-4C8H8N2O3S212.23 g/mol
Organic/Inorganic Small MoleculeChEBI source record

A 1,2-benzoxazole compound having a sulfamoylmethyl substituent at the 3-position. — ChEBI

Safety references

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Identity & molecular properties

Source-linked values
CAS number68291-97-4ChEBI ↗
Molecular formulaC8H8N2O3SChEBI ↗
Molar mass212.23 g/molChEBI ↗
Monoisotopic mass212.02556 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:10127ChEBI ↗

Cross-source molecular data

PubChem
Molar mass212.23 g/molPubChem ↗
Exact mass212.02556330 DaPubChem ↗
Computed XLogP0.2PubChem ↗
Topological polar surface area (Ų)94.6PubChem ↗
H-bond donors1PubChem ↗
H-bond acceptors5PubChem ↗
Rotatable bonds2PubChem ↗

PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.

Names & structural identifiers

Copy any identifier
zonisamide
1-(1,2-benzisoxazol-3-yl)methanesulfonamide
UBQNRHZMVUUOMG-UHFFFAOYSA-N
NS(=O)(=O)Cc1noc2ccccc12
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)

Names & synonyms

1-(1,2-benzisoxazol-3-yl)methanesulfonamidezonisamidazonisamidum

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology
sulfonamideChEBI parent class · 35358 ↗1,2-benzoxazolesChEBI parent class · 51545 ↗
organosulfur compoundorganic heterocyclic compoundorganic molecular entity

Roles recorded in ChEBI

T-type calcium channel blockerantioxidantcentral nervous system drugantipsychotic agentanticonvulsantantiparkinson drugprotective agentanti-obesity agent

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass
Equivalent amount
0.00471187 mol

Uses 212.23 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions
C
Carbon · 8 atoms
45.27%
O
Oxygen · 3 atoms
22.62%
S
Sulfur · 1 atom
15.11%
N
Nitrogen · 2 atoms
13.20%
H
Hydrogen · 8 atoms
3.80%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

Research & patent references

Selected source associations
JP7877057 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.
US4172896 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.
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Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:10127

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

NCBI PubChem · CID 5734 · retrieved 2026-09-27

PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.

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