Metamizole EP Impurity C HCl

About Metamizole EP Impurity C HCl

Metamizole EP Impurity C HCl is a pharmacopeial impurity of Metamizole carrying the CAS registry number 856307-27-2. The compound has the formula C12H16ClN3O, corresponding to a molecular weight of 253.73 g/mol. It is also known as Metamizole EP Impurity C Hydrochloride or Metamizole EP Impurity C (HCl salt).

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Good laboratory practice and suitable PPE are recommended during handling.

As a characterised impurity of Metamizole, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export 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 C HCl
Catalogue No.	VQ-026621
CAS Number	856307-27-2
IUPAC name	1,5-dimethyl-4-(methylamino)-2-phenylpyrazol-3-one;hydrochloride
Molecular formula	C₁₂H₁₆ClN₃O
Molecular weight	253.73 g/mol
Exact mass	253.0982
Grade	Reference Standard
HSN code	38229090
InChIKey	NNONRTWOIVTAHL-UHFFFAOYSA-N
SMILES	CC1=C(C(=O)N(N1C)C2=CC=CC=C2)NC.Cl
PubChem CID	54759014

Physical properties
Physical form	Solid
H-bond donors / acceptors	2 / 3
TPSA	35.6 Å²
Synonyms	Metamizole EP Impurity C Hydrochloride, Metamizole EP Impurity C (HCl salt), Metamizole Sodium - Impurity C (Hydrochloride Salt), 1,5-dimethyl-4-(methylamino)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one hydrochloride, 4-Methylamino antipyrine hydrochloride, 4-(Methylamino)antipyrine hydrochloride, 4-Methylaminoantipyrine Hydrochloride, 4-Methylamino antipyrine (hydrochloride)

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 C HCl?

The CAS Registry Number of Metamizole EP Impurity C HCl is 856307-27-2. It is also known as Metamizole EP Impurity C Hydrochloride, Metamizole EP Impurity C (HCl salt), Metamizole Sodium - Impurity C (Hydrochloride Salt).

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

Metamizole EP Impurity C HCl has the molecular formula C12H16ClN3O and a molecular weight of 253.73 g/mol.

What is Metamizole EP Impurity C HCl used for?

Metamizole EP Impurity C HCl 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 C HCl can I order?

We supply Metamizole EP Impurity C HCl 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 C HCl?

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

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