Sulfisoxazole

About Sulfisoxazole

Sulfisoxazole is an API reference standard carrying the CAS registry number 127-69-5. Formula C11H13N3O3S, molecular weight 267.31 g/mol. The IUPAC name is 4-amino-N-(3,4-dimethyl-1,2-oxazol-5-yl)benzenesulfonamide. Alternative names: Sulfafurazol and Sulfisoxazol.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

As a reference sample of the parent drug substance, it is used for identification, assay and impurity-profiling work during analytical method development, validation (AMV) and routine QC. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

We offer Sulfisoxazole in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material

Industries

Specifications & identifiers

Chemical identifiers
Product name	Sulfisoxazole
Catalogue No.	VQ-043309
CAS Number	127-69-5
IUPAC name	4-amino-N-(3,4-dimethyl-1,2-oxazol-5-yl)benzenesulfonamide
Molecular formula	C₁₁H₁₃N₃O₃S
Molecular weight	267.31 g/mol
Exact mass	267.0678
Grade	Reference Standard
HSN code	38229090
InChIKey	NHUHCSRWZMLRLA-UHFFFAOYSA-N
SMILES	CC1=C(ON=C1C)NS(=O)(=O)C2=CC=C(C=C2)N
PubChem CID	5344

Physical properties
Physical form	Solid
LogP (XLogP3)	1
H-bond donors / acceptors	2 / 6
TPSA	107 Å²
Synonyms	Sulfafurazol, Sulfisoxazol, Amidoxal, Sulfoxol, Isoxamin, Neazolin, Neoxazol, Soxomide, Sulfisoxazole dialamine, Sulsoxin, 4-amino-N-(3,4-dimethylisoxazol-5-yl)benzenesulfonamide, Soxisol

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, 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 Sulfisoxazole?

The CAS Registry Number of Sulfisoxazole is 127-69-5. It is also known as Sulfafurazol, Sulfisoxazol, Amidoxal.

What is the molecular formula and molecular weight of Sulfisoxazole?

Sulfisoxazole has the molecular formula C11H13N3O3S and a molecular weight of 267.31 g/mol. Its IUPAC name is 4-amino-N-(3,4-dimethyl-1,2-oxazol-5-yl)benzenesulfonamide.

Which grade and pack sizes of Sulfisoxazole can I order?

We supply Sulfisoxazole 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 Sulfisoxazole?

Yes. Every lot of Sulfisoxazole 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 Sulfisoxazole be shipped internationally?

Yes. Sulfisoxazole 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.