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Metabolites & Degradation Products

4-Acetamidoantipyrine

Reference StandardAvailable on request

Buy 4-Acetamidoantipyrine (CAS 83-15-8) from Zemixal: C13H15N3O2, COA and SDS with every lot, worldwide shipping. Catalogue no. ZX-022107.

Pack sizes
4-Acetamidoantipyrine chemical structure
CAS number83-15-8
FormulaC13H15N3O2
Molar mass245.28 g/mol
Physical formSolid
HS code38229090
InChIKeyOIAGWXKSCXPNNZ-UHFFFAOYSA-N
IUPAC nameN-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)acetamide

About 4-Acetamidoantipyrine

Analytical teams working on Metamizole use 4-Acetamidoantipyrine as a qualified comparison standard. Identity at a glance (Reference Standard): CAS 83-15-8, formula C13H15N3O2 and molar mass 245.28 g/mol. It is handled as a solid.

Use cases we see most often

  • Metabolite identification
  • Stability-indicating methods
  • Impurity profiling

Storage and safety notes

It carries the GHS signal word Warning (H302), so wear gloves and eye protection and work with good ventilation.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Every shipment includes a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Metamizole

See every impurity, metabolite and related compound we list for this API.

Metamizole standards

Typical uses

  • Metabolite identification
  • Stability-indicating methods
  • Impurity profiling

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of 4-Acetamidoantipyrine
Product name4-Acetamidoantipyrine
Catalogue numberZX-022107
CAS number83-15-8
IUPAC nameN-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)acetamide
Molecular formulaC13H15N3O2
Molar mass245.28 g/mol
Exact mass245.1164
GradeReference Standard
Physical formSolid
H-bond donors / acceptors1 / 3
Topological polar surface area52.7 Ų
HS code38229090
InChIKeyOIAGWXKSCXPNNZ-UHFFFAOYSA-N
SMILESCC1=C(C(=O)N(N1C)C2=CC=CC=C2)NC(=O)C
PubChem CID65743
Synonyms4-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-

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H302Harmful if swallowed

Precautionary statements P264, P270, P301 + P317, P330, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of 4-Acetamidoantipyrine
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about 4-Acetamidoantipyrine

Which CAS number identifies 4-Acetamidoantipyrine?
4-Acetamidoantipyrine is registered under CAS 83-15-8. You may also see it listed as 4-Acetylaminophenazone, 4-Acetylaminoantipyrine, 4-Acetaminoantipyrine. Our catalogue number for this item is ZX-022107.
What are the formula and molar mass of 4-Acetamidoantipyrine?
For 4-Acetamidoantipyrine, its formula is C13H15N3O2 and its molar mass is 245.28 g/mol. The systematic (IUPAC) name is N-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)acetamide. InChIKey OIAGWXKSCXPNNZ-UHFFFAOYSA-N lets you match it in any structure database.
How is 4-Acetamidoantipyrine used in pharmaceutical QC?
4-Acetamidoantipyrine is a characterised reference material linked to Metamizole. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for 4-Acetamidoantipyrine?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with 4-Acetamidoantipyrine?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship 4-Acetamidoantipyrine to my country?
Yes. Because 4-Acetamidoantipyrine is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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