Azathioprine EP Impurity B

Name: Azathioprine EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-034791

About Azathioprine EP Impurity B

Azathioprine EP Impurity B (CAS 157930-13-7) is a pharmacopeial impurity of Azathioprine offered by Vaqora Chemicals. Its molecular formula is C5H4N4S and its molecular weight is 152.18 g/mol. Its systematic (IUPAC) name is 3,7-dihydropurine-6-thione. Common synonyms include Azathioprine - Impurity B and Mercaptopurine.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Pharmaceutical QC and development laboratories use this impurity standard of Azathioprine to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Our customers for this product work in 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

Related to Azathioprine

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

Azathioprine impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Azathioprine EP Impurity B
Catalogue No.	VQ-034791
CAS Number	157930-13-7
IUPAC name	3,7-dihydropurine-6-thione
Molecular formula	C₅H₄N₄S
Molecular weight	152.18 g/mol
Exact mass	152.0157
Grade	Reference Standard
HSN code	38229090
InChIKey	GLVAUDGFNGKCSF-UHFFFAOYSA-N
SMILES	C1=NC2=C(N1)C(=S)N=CN2
PubChem CID	667490

Physical properties
Physical form	Solid
H-bond donors / acceptors	2 / 2
TPSA	85.2 Å²
Synonyms	Azathioprine - Impurity B, Mercaptopurine, 6-Mercaptopurine, Mercapurin, 6-Thiopurine, 6-Thioxopurine, 9H-Purine-6-thiol, 6-Mercaptopurin, Puri-Nethol, 6-Thiohypoxanthine, 1,9-dihydro-6H-purine-6-thione, Mercaptopurin

Safety & hazard information (GHS)

Toxic

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

H301Toxic if swallowed
H302Harmful if swallowed
H361Suspected of damaging fertility or the unborn child

Precautionary statements: P203, P264, P270, P280, P301 + P316, P301 + P317, P318, P321, 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 Azathioprine EP Impurity B?

The CAS Registry Number of Azathioprine EP Impurity B is 157930-13-7. It is also known as Azathioprine - Impurity B, Mercaptopurine, 6-Mercaptopurine.

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

Azathioprine EP Impurity B has the molecular formula C5H4N4S and a molecular weight of 152.18 g/mol. Its IUPAC name is 3,7-dihydropurine-6-thione.

What is Azathioprine EP Impurity B used for?

Azathioprine EP Impurity B is supplied as a characterised reference material related to Azathioprine. 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 Azathioprine EP Impurity B can I order?

We supply Azathioprine 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 Azathioprine EP Impurity B?

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

Yes. Azathioprine 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.