4-Acetamidoantipyrine

Name: 4-Acetamidoantipyrine
Brand: Vaqora Chemicals
SKU: VQ-023081

About 4-Acetamidoantipyrine

Listed under CAS 83-15-8, 4-Acetamidoantipyrine is a metabolite or degradation product of Metamizole available from Vaqora Chemicals. The compound has the formula C13H15N3O2, corresponding to a molecular weight of 245.28 g/mol. Its systematic (IUPAC) name is N-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)acetamide. Common synonyms include 4-Acetylaminophenazone and 4-Acetylaminoantipyrine.

It is supplied 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 “Warning”, so handle it with suitable PPE and consult the SDS.

It is used in metabolite identification, stability-indicating method development and impurity profiling of Metamizole, as well as in QC testing and ANDA/DMF documentation. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

We offer 4-Acetamidoantipyrine in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Metabolite identification
Stability-indicating methods
Impurity profiling

Industries

Related to Metamizole

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

Metamizole impurities

Specifications & identifiers

Chemical identifiers
Product name	4-Acetamidoantipyrine
Catalogue No.	VQ-023081
CAS Number	83-15-8
IUPAC name	N-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)acetamide
Molecular formula	C₁₃H₁₅N₃O₂
Molecular weight	245.28 g/mol
Exact mass	245.1164
Grade	Reference Standard
HSN code	38229090
InChIKey	OIAGWXKSCXPNNZ-UHFFFAOYSA-N
SMILES	CC1=C(C(=O)N(N1C)C2=CC=CC=C2)NC(=O)C
PubChem CID	65743

Physical properties
Physical form	Solid
H-bond donors / acceptors	1 / 3
TPSA	52.7 Å²
Synonyms	4-Acetylaminophenazone, 4-Acetylaminoantipyrine, 4-Acetaminoantipyrine, Acetylaminoantipyrine, 4-Acetoaminoantipyrine, N-Acetylaminoantipyrine, Acetamide, N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)-, Acetamidoantipyrine, N-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)acetamide, Antipyrine, 4-acetamido-, Acetamide, N-antipyrinyl-

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 4-Acetamidoantipyrine?

The CAS Registry Number of 4-Acetamidoantipyrine is 83-15-8. It is also known as 4-Acetylaminophenazone, 4-Acetylaminoantipyrine, 4-Acetaminoantipyrine.

What is the molecular formula and molecular weight of 4-Acetamidoantipyrine?

4-Acetamidoantipyrine has the molecular formula C13H15N3O2 and a molecular weight of 245.28 g/mol. Its IUPAC name is N-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)acetamide.

What is 4-Acetamidoantipyrine used for?

4-Acetamidoantipyrine is supplied as a characterised reference material related to Metamizole. 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 4-Acetamidoantipyrine can I order?

We supply 4-Acetamidoantipyrine 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 4-Acetamidoantipyrine?

Yes. Every lot of 4-Acetamidoantipyrine 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 4-Acetamidoantipyrine be shipped internationally?

Yes. 4-Acetamidoantipyrine 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.