Acetazolamide EP Impurity B

Name: Acetazolamide EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-020721

About Acetazolamide EP Impurity B

Listed under CAS 5393-55-5, Acetazolamide EP Impurity B is a pharmacopeial impurity standard available from Vaqora Chemicals. Formula C4H5N3OS, molecular weight 143.17 g/mol. Systematically, it is named N-(1,3,4-thiadiazol-2-yl)acetamide. Common synonyms include Acetazolamide Related compound A and Acetazolamide - Impurity B.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Pharmaceutical QC and development laboratories use this impurity standard of the parent drug substance to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

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

Typical applications

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

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Acetazolamide EP Impurity B
Catalogue No.	VQ-020721
CAS Number	5393-55-5
IUPAC name	N-(1,3,4-thiadiazol-2-yl)acetamide
Molecular formula	C₄H₅N₃OS
Molecular weight	143.17 g/mol
Exact mass	143.0153
Grade	Reference Standard
HSN code	38229090
InChIKey	YOGFGFKRNRQDMF-UHFFFAOYSA-N
SMILES	CC(=O)NC1=NN=CS1
PubChem CID	94839

Physical properties
Physical form	Solid
LogP (XLogP3)	-0.1
H-bond donors / acceptors	1 / 4
TPSA	83.1 Å²
Synonyms	Acetazolamide Related compound A, Acetazolamide - Impurity B, N-1,3,4-Thiadiazol-2-ylacetamide, 2-Acetylamino-1,3,4-thiadiazole, Acetamide, N-1,3,4-thiadiazol-2-yl-, 1,3,4-Thiadiazole, 2-acetamido-, 5-acetamido-1,3,4-thiadiazole, 2-Acetamido-1,3,4-thiadiazole, 1,4-Thiadiazole, 2-acetamido-

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + P317, P330, 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 Acetazolamide EP Impurity B?

The CAS Registry Number of Acetazolamide EP Impurity B is 5393-55-5. It is also known as Acetazolamide Related compound A, Acetazolamide - Impurity B, N-1,3,4-Thiadiazol-2-ylacetamide.

What is the molecular formula and molecular weight of Acetazolamide EP Impurity B?

Acetazolamide EP Impurity B has the molecular formula C4H5N3OS and a molecular weight of 143.17 g/mol. Its IUPAC name is N-(1,3,4-thiadiazol-2-yl)acetamide.

Which grade and pack sizes of Acetazolamide EP Impurity B can I order?

We supply Acetazolamide EP Impurity B 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 Acetazolamide EP Impurity B?

Yes. Every lot of Acetazolamide EP Impurity B 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 Acetazolamide EP Impurity B be shipped internationally?

Yes. Acetazolamide EP Impurity B 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.