Cefazolin EP Impurity B

About Cefazolin EP Impurity B

Cefazolin EP Impurity B is a pharmacopeial impurity of Cefazolin carrying the CAS registry number 2384108-14-7. Its molecular formula is C16H20N4O4S3 and its molecular weight is 428.6 g/mol. Common synonyms include Cefazolin Sodium - Impurity B and Cefazolin pivaloyl.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

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

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Cefazolin EP Impurity B is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

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

Industries

Related to Cefazolin

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

Cefazolin impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Cefazolin EP Impurity B
Catalogue No.	VQ-022068
CAS Number	2384108-14-7
IUPAC name	(6R,7R)-7-(2,2-dimethylpropanoylamino)-3-[(5-methyl-1,3,4-thiadiazol-2-yl)sulfanylmethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Molecular formula	C₁₆H₂₀N₄O₄S₃
Molecular weight	428.6 g/mol
Exact mass	428.0647
Grade	Reference Standard
HSN code	38229090
InChIKey	PYQNLAKCAGCVKA-BXKDBHETSA-N
SMILES	CC1=NN=C(S1)SCC2=C(N3[C@@H]([C@@H](C3=O)NC(=O)C(C)(C)C)SC2)C(=O)O
PubChem CID	124519572

Physical properties
Physical form	Solid
LogP (XLogP3)	0.8
H-bond donors / acceptors	2 / 9
TPSA	191 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 Cefazolin EP Impurity B?

The CAS Registry Number of Cefazolin EP Impurity B is 2384108-14-7. It is also known as Cefazolin Sodium - Impurity B, Cefazolin pivaloyl, 7-Pivalamido Cefazolin.

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

Cefazolin EP Impurity B has the molecular formula C16H20N4O4S3 and a molecular weight of 428.6 g/mol. Its IUPAC name is (6R,7R)-7-(2,2-dimethylpropanoylamino)-3-[(5-methyl-1,3,4-thiadiazol-2-yl)sulfanylmethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid.

What is Cefazolin EP Impurity B used for?

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

We supply Cefazolin 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 Cefazolin EP Impurity B?

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

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