Zonisamide USP Related Compound A

Name: Zonisamide USP Related Compound A
Brand: Vaqora Chemicals
SKU: VQ-024059

About Zonisamide USP Related Compound A

Vaqora Chemicals supplies Zonisamide USP Related Compound A, a pharmacopeial impurity standard registered under CAS number 73101-64-1. The compound has the formula C8H6NNaO4S, corresponding to a molecular weight of 235.19 g/mol. The IUPAC name is sodium 1,2-benzoxazol-3-ylmethanesulfonate. Common synonyms include Sodium 1,2-Benzisoxazole-3-methanesulfonate and Zonisamide Related Compound A.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. It carries the GHS signal word “Warning” with 2 hazard statements. Review the Safety Data Sheet before use.

As a characterised impurity of the parent drug substance, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Zonisamide USP Related Compound A
Catalogue No.	VQ-024059
CAS Number	73101-64-1
IUPAC name	sodium 1,2-benzoxazol-3-ylmethanesulfonate
Molecular formula	C₈H₆NNaO₄S
Molecular weight	235.19 g/mol
Exact mass	234.9915
Grade	Reference Standard
HSN code	38229090
InChIKey	QILCHBOPDIODSB-UHFFFAOYSA-M
SMILES	C1=CC=C2C(=C1)C(=NO2)CS(=O)(=O)[O-].[Na+]
PubChem CID	23674934

Physical properties
Physical form	Solid
H-bond donors / acceptors	0 / 5
TPSA	91.6 Å²
Synonyms	1,2-Benzisoxazole-3-methanesulfonic acid sodium salt, Sodium 1,2-Benzisoxazole-3-methanesulfonate, Zonisamide Related Compound A, 1,2-Benzisoxazole-3-methanesulfonate sodium, 1,2-Benzisoxazole-3-methanesulfonic acid, sodium salt (1:1), 1,2-Benzisoxaole-3-Methanesulfonic acid sodium salt, Sodium Benzo[d]isoxazol-3-ylmethanesulfonate, 1,2-Benzisoxazole-3-methanesulfonate Sodium Salt, sodium (1,2-benzoxazol-3-yl)methanesulfonate, forZonisamide, Sodium 2-(1,2-benzisoxazol-3-yl)methanesulfonate, 73101-64-1(Na salt)

Safety & hazard information (GHS)

Health hazard

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H341Suspected of causing genetic defects

Precautionary statements: P203, P264, P270, P280, P301 + P317, P318, P330, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Zonisamide USP Related Compound A?

The CAS Registry Number of Zonisamide USP Related Compound A is 73101-64-1. It is also known as 1,2-Benzisoxazole-3-methanesulfonic acid sodium salt, Sodium 1,2-Benzisoxazole-3-methanesulfonate, Zonisamide Related Compound A.

What is the molecular formula and molecular weight of Zonisamide USP Related Compound A?

Zonisamide USP Related Compound A has the molecular formula C8H6NNaO4S and a molecular weight of 235.19 g/mol. Its IUPAC name is sodium 1,2-benzoxazol-3-ylmethanesulfonate.

Which grade and pack sizes of Zonisamide USP Related Compound A can I order?

We supply Zonisamide USP Related Compound A in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Zonisamide USP Related Compound A?

Yes. Every lot of Zonisamide USP Related Compound A is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Zonisamide USP Related Compound A be shipped internationally?

Yes. Zonisamide USP Related Compound A is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.