Allopurinol EP Impurity E

Name: Allopurinol EP Impurity E
Brand: Vaqora Chemicals
SKU: VQ-021496

About Allopurinol EP Impurity E

Listed under CAS 31055-19-3, Allopurinol EP Impurity E is a pharmacopeial impurity of Allopurinol available from Vaqora Chemicals. Formula C7H9N3O3, molecular weight 183.16 g/mol. The IUPAC name is ethyl 5-formamido-1H-pyrazole-4-carboxylate. Alternative names: Allopurinol - Impurity E and Allopurinol Impurity E.

It is supplied as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

This Allopurinol impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Allopurinol EP Impurity E in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

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

Industries

Related to Allopurinol

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

Allopurinol impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Allopurinol EP Impurity E
Catalogue No.	VQ-021496
CAS Number	31055-19-3
IUPAC name	ethyl 5-formamido-1H-pyrazole-4-carboxylate
Molecular formula	C₇H₉N₃O₃
Molecular weight	183.16 g/mol
Exact mass	183.0644
Grade	Reference Standard
HSN code	38229090
InChIKey	VAEIHNPPOAVFAR-UHFFFAOYSA-N
SMILES	CCOC(=O)C1=C(NN=C1)NC=O
PubChem CID	13926581

Physical properties
Physical form	Solid
LogP (XLogP3)	0.5
H-bond donors / acceptors	2 / 4
TPSA	84.1 Å²
Synonyms	Allopurinol - Impurity E, Allopurinol EP Impurity E, allopurinol USP rc e, Ethyl 5-(formylamino)-1H-pyrazole-4-carboxylate, Allopurinol Impurity E, Pyrazole-4-carboxylic acid, 3-formamido-, ethyl ester, 1H-Pyrazole-4-carboxylic acid, 3-(formylamino)-, ethyl ester, 3-(Formylamino)-1H-pyrazole-4-carboxylic Acid Ethyl Ester, 3-formamido-4-ethoxycarbonylpyrazole

Safety & hazard information (GHS)

Harmful / irritant

Environmental hazard

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H411Toxic to aquatic life with long lasting effects

Precautionary statements: P264, P270, P273, P301 + P317, P330, P391, 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 Allopurinol EP Impurity E?

The CAS Registry Number of Allopurinol EP Impurity E is 31055-19-3. It is also known as Allopurinol - Impurity E, Allopurinol EP Impurity E, allopurinol USP rc e.

What is the molecular formula and molecular weight of Allopurinol EP Impurity E?

Allopurinol EP Impurity E has the molecular formula C7H9N3O3 and a molecular weight of 183.16 g/mol. Its IUPAC name is ethyl 5-formamido-1H-pyrazole-4-carboxylate.

What is Allopurinol EP Impurity E used for?

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

We supply Allopurinol EP Impurity E 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 Allopurinol EP Impurity E?

Yes. Every lot of Allopurinol EP Impurity E 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 Allopurinol EP Impurity E be shipped internationally?

Yes. Allopurinol EP Impurity E 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.