Cefapirin EP Impurity B

Name: Cefapirin EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-036187

About Cefapirin EP Impurity B

Listed under CAS 38115-21-8, Cefapirin EP Impurity B is a pharmacopeial impurity of Cefapirin available from Vaqora Chemicals. With the molecular formula C15H15N3O5S2, it has a molar mass of 381.4 g/mol. It is also known as Cephapirin - Impurity B or Desacetylcephapirin.

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 Cefapirin, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Typical end-use sectors are 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 Cefapirin

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

Cefapirin impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Cefapirin EP Impurity B
Catalogue No.	VQ-036187
CAS Number	38115-21-8
IUPAC name	(6R,7R)-3-(hydroxymethyl)-8-oxo-7-[(2-pyridin-4-ylsulfanylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Molecular formula	C₁₅H₁₅N₃O₅S₂
Molecular weight	381.4 g/mol
Exact mass	381.0453
Grade	Reference Standard
HSN code	38229090
InChIKey	IOFHZPVEQXTSQW-BXUZGUMPSA-N
SMILES	C1C(=C(N2[C@H](S1)[C@@H](C2=O)NC(=O)CSC3=CC=NC=C3)C(=O)O)CO
PubChem CID	162287

Physical properties
Physical form	Solid
LogP (XLogP3)	-1.7
H-bond donors / acceptors	3 / 8
TPSA	170 Å²

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 Cefapirin EP Impurity B?

The CAS Registry Number of Cefapirin EP Impurity B is 38115-21-8. It is also known as Cephapirin - Impurity B, Desacetylcephapirin, Desacetyl cephapirin.

What is the molecular formula and molecular weight of Cefapirin EP Impurity B?

Cefapirin EP Impurity B has the molecular formula C15H15N3O5S2 and a molecular weight of 381.4 g/mol. Its IUPAC name is (6R,7R)-3-(hydroxymethyl)-8-oxo-7-[(2-pyridin-4-ylsulfanylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid.

What is Cefapirin EP Impurity B used for?

Cefapirin EP Impurity B is supplied as a characterised reference material related to Cefapirin. 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 Cefapirin EP Impurity B can I order?

We supply Cefapirin EP Impurity B 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 Cefapirin EP Impurity B?

Yes. Every lot of Cefapirin EP Impurity B 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 Cefapirin EP Impurity B be shipped internationally?

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