Sulfamethoxazole EP Impurity A

Name: Sulfamethoxazole EP Impurity A
Brand: Vaqora Chemicals
SKU: VQ-028142

About Sulfamethoxazole EP Impurity A

Vaqora Chemicals supplies Sulfamethoxazole EP Impurity A, a pharmacopeial impurity of Sulfamethoxazole registered under CAS number 21312-10-7. Its molecular formula is C12H13N3O4S and its molecular weight is 295.32 g/mol. Systematically, it is named N-[4-[(5-methyl-1,2-oxazol-3-yl)sulfamoyl]phenyl]acetamide. Alternative names: Sulfamethoxazole Related Compound A and Sulfamethoxazole - Impurity A.

The product is provided 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.

Pharmaceutical QC and development laboratories use this impurity standard of Sulfamethoxazole to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. It is used across pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Sulfamethoxazole EP Impurity A is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

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

Industries

Related to Sulfamethoxazole

View every impurity, metabolite and intermediate we list for Sulfamethoxazole.

Sulfamethoxazole impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Sulfamethoxazole EP Impurity A
Catalogue No.	VQ-028142
CAS Number	21312-10-7
IUPAC name	N-[4-[(5-methyl-1,2-oxazol-3-yl)sulfamoyl]phenyl]acetamide
Molecular formula	C₁₂H₁₃N₃O₄S
Molecular weight	295.32 g/mol
Exact mass	295.0627
Grade	Reference Standard
HSN code	38229090
InChIKey	GXPIUNZCALHVBA-UHFFFAOYSA-N
SMILES	CC1=CC(=NO1)NS(=O)(=O)C2=CC=C(C=C2)NC(=O)C
PubChem CID	65280

Physical properties
Physical form	Solid
LogP (XLogP3)	0.7
H-bond donors / acceptors	2 / 6
TPSA	110 Å²
Synonyms	Sulfamethoxazole Related Compound A, Sulfamethoxazole - Impurity A, N(4)-Acetylsulfamethoxazole, N(4)-acetylsulphamethoxazole, N-(4-(((5-Methyl-3-isoxazolyl)amino)sulfonyl)phenyl)acetamide, N-(4-{[(5-methyl-3-isoxazolyl)amino]sulfonyl}phenyl)acetamide, N4-Acetylsulfamethoxazole, N-Acetyl sulfamethoxazole, N-(4-(N-(5-Methylisoxazol-3-yl)sulfamoyl)phenyl)acetamide, N-acetylsulfamethoxazole, SMX-acetate, 4-Acetylamino-N-(5-methyl-3-isoxazolyl)benzenesulfonamide

Safety & hazard information (GHS)

Harmful / irritant

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 Sulfamethoxazole EP Impurity A?

The CAS Registry Number of Sulfamethoxazole EP Impurity A is 21312-10-7. It is also known as Sulfamethoxazole Related Compound A, Sulfamethoxazole - Impurity A, N(4)-Acetylsulfamethoxazole.

What is the molecular formula and molecular weight of Sulfamethoxazole EP Impurity A?

Sulfamethoxazole EP Impurity A has the molecular formula C12H13N3O4S and a molecular weight of 295.32 g/mol. Its IUPAC name is N-[4-[(5-methyl-1,2-oxazol-3-yl)sulfamoyl]phenyl]acetamide.

What is Sulfamethoxazole EP Impurity A used for?

Sulfamethoxazole EP Impurity A is supplied as a characterised reference material related to Sulfamethoxazole. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Sulfamethoxazole EP Impurity A can I order?

We supply Sulfamethoxazole EP Impurity 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 Sulfamethoxazole EP Impurity A?

Yes. Every lot of Sulfamethoxazole EP Impurity 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 Sulfamethoxazole EP Impurity A be shipped internationally?

Yes. Sulfamethoxazole EP Impurity 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.