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Pharmacopeial Impurities (EP / USP / BP)

Metamizole EP Impurity E

Reference StandardAvailable on request

Order Metamizole EP Impurity E (CAS 129-89-5) online at Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-025551.

Pack sizes
Metamizole EP Impurity E chemical structure
CAS number129-89-5
FormulaC12H14N3NaO4S
Molar mass319.31 g/mol
Physical formSolid
HS code38229090
InChIKeyZFDPAZDODACYOG-UHFFFAOYSA-M
IUPAC namesodium [(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)amino]methanesulfonate

About Metamizole EP Impurity E

Analytical teams working on Metamizole use Metamizole EP Impurity E as a qualified comparison standard. Key data (Reference Standard): CAS 129-89-5, formula C12H14N3NaO4S and molar mass 319.31 g/mol. It is handled as a solid.

Common uses in the lab and plant

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

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with 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

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

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Metamizole EP Impurity E
Product nameMetamizole EP Impurity E
Catalogue numberZX-025551
CAS number129-89-5
IUPAC namesodium [(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)amino]methanesulfonate
Molecular formulaC12H14N3NaO4S
Molar mass319.31 g/mol
Exact mass319.0603
GradeReference Standard
Physical formSolid
H-bond donors / acceptors1 / 6
Topological polar surface area101 Ų
HS code38229090
InChIKeyZFDPAZDODACYOG-UHFFFAOYSA-M
SMILESCC1=C(C(=O)N(N1C)C2=CC=CC=C2)NCS(=O)(=O)[O-].[Na+]
PubChem CID23667646
SynonymsMetamizole impurity E Sodium Salt, Metamizole Sodium - Impurity E (Sodium Salt), Sulfamidopyrine sodium, Pyrazogin, Sulphamipyrin, Amizole (pharmaceutical), Sulfamidopyrin-Natrium, Methanesulfonic acid, (antipyrinylamino)-, monosodium salt, N-(2,3-Dimethyl-5-oxo-1-phenyl-3-pyrazolin-4-yl)aminomethansulfonsaeure natriumsalz, 1-Phenyl-2,3-dimethyl-4-amino-5-pyrazolon-N-methanesulfonsaeuren natrium, Melaminsulfone Sodium Salt, Melaminsulfone

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

Safety and GHS hazards

No GHS classification is on file for this item. Handle it as an unknown laboratory chemical and request the SDS with your quotation.

Pack sizes

Pack sizes of Metamizole EP Impurity E
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 Metamizole EP Impurity E

Which CAS number identifies Metamizole EP Impurity E?
Metamizole EP Impurity E is registered under CAS 129-89-5. You may also see it listed as Metamizole impurity E Sodium Salt, Metamizole Sodium - Impurity E (Sodium Salt), Sulfamidopyrine sodium. Our catalogue number for this item is ZX-025551.
What are the formula and molar mass of Metamizole EP Impurity E?
For Metamizole EP Impurity E, its formula is C12H14N3NaO4S and its molar mass is 319.31 g/mol. The systematic (IUPAC) name is sodium [(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)amino]methanesulfonate. InChIKey ZFDPAZDODACYOG-UHFFFAOYSA-M lets you match it in any structure database.
How is Metamizole EP Impurity E used in pharmaceutical QC?
Metamizole EP Impurity E 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 Metamizole EP Impurity E?
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 Metamizole EP Impurity E?
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 Metamizole EP Impurity E to my country?
Yes. Metamizole EP Impurity E ships worldwide by express courier, air cargo or sea freight, quoted on the Incoterm you prefer, with full export documents.

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