Metamizole EP Impurity E

Name: Metamizole EP Impurity E
Brand: Vaqora Chemicals
SKU: VQ-026622

About Metamizole EP Impurity E

Listed under CAS 129-89-5, Metamizole EP Impurity E is a pharmacopeial impurity of Metamizole available from Vaqora Chemicals. The compound has the formula C12H14N3NaO4S, corresponding to a molecular weight of 319.31 g/mol. Systematically, it is named sodium [(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)amino]methanesulfonate. It is also known as Metamizole impurity E Sodium Salt or Metamizole Sodium - Impurity E (Sodium Salt).

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

This Metamizole impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer Metamizole EP Impurity E in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

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

Industries

Related to Metamizole

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

Metamizole impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Metamizole EP Impurity E
Catalogue No.	VQ-026622
CAS Number	129-89-5
IUPAC name	sodium [(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)amino]methanesulfonate
Molecular formula	C₁₂H₁₄N₃NaO₄S
Molecular weight	319.31 g/mol
Exact mass	319.0603
Grade	Reference Standard
HSN code	38229090
InChIKey	ZFDPAZDODACYOG-UHFFFAOYSA-M
SMILES	CC1=C(C(=O)N(N1C)C2=CC=CC=C2)NCS(=O)(=O)[O-].[Na+]
PubChem CID	23667646

Physical properties
Physical form	Solid
H-bond donors / acceptors	1 / 6
TPSA	101 Å²
Synonyms	Metamizole 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

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 Metamizole EP Impurity E?

The CAS Registry Number of Metamizole EP Impurity E is 129-89-5. It is also known as Metamizole impurity E Sodium Salt, Metamizole Sodium - Impurity E (Sodium Salt), Sulfamidopyrine sodium.

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

Metamizole EP Impurity E has the molecular formula C12H14N3NaO4S and a molecular weight of 319.31 g/mol. Its IUPAC name is sodium [(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)amino]methanesulfonate.

What is Metamizole EP Impurity E used for?

Metamizole EP Impurity E 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 Metamizole EP Impurity E can I order?

We supply Metamizole 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 Metamizole EP Impurity E?

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

Yes. We export Metamizole EP Impurity E worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.