Delta4-Cephalexin Diketopiperazine

About Delta4-Cephalexin Diketopiperazine

Delta4-Cephalexin Diketopiperazine is an impurity of Cephalexin carrying the CAS registry number 65870-52-2. The compound has the formula C16H17N3O4S, corresponding to a molecular weight of 347.4 g/mol. Systematically, it is named 2-(3,6-dioxo-5-phenylpiperazin-2-yl)-5-methyl-5,6-dihydro-2H-1,3-thiazine-4-carboxylic acid. Alternative names: Cefalexin Diketopiperazine Delta-3 Isomer.

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. Good laboratory practice and suitable PPE are recommended during handling.

This Cephalexin impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

We offer Delta4-Cephalexin Diketopiperazine in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Cephalexin

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

Cephalexin impurities

Specifications & identifiers

Chemical identifiers
Product name	Delta4-Cephalexin Diketopiperazine
Catalogue No.	VQ-024909
CAS Number	65870-52-2
IUPAC name	2-(3,6-dioxo-5-phenylpiperazin-2-yl)-5-methyl-5,6-dihydro-2H-1,3-thiazine-4-carboxylic acid
Molecular formula	C₁₆H₁₇N₃O₄S
Molecular weight	347.4 g/mol
Exact mass	347.094
Grade	Reference Standard
HSN code	38229090
InChIKey	NOPWEGGWWFOKMQ-UHFFFAOYSA-N
SMILES	CC1CSC(N=C1C(=O)O)C2C(=O)NC(C(=O)N2)C3=CC=CC=C3
PubChem CID	74036179

Physical properties
Physical form	Solid
LogP (XLogP3)	0.8
H-bond donors / acceptors	3 / 6
TPSA	133 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 Delta4-Cephalexin Diketopiperazine?

The CAS Registry Number of Delta4-Cephalexin Diketopiperazine is 65870-52-2. It is also known as Cefalexin Diketopiperazine Delta-3 Isomer.

What is the molecular formula and molecular weight of Delta4-Cephalexin Diketopiperazine?

Delta4-Cephalexin Diketopiperazine has the molecular formula C16H17N3O4S and a molecular weight of 347.4 g/mol. Its IUPAC name is 2-(3,6-dioxo-5-phenylpiperazin-2-yl)-5-methyl-5,6-dihydro-2H-1,3-thiazine-4-carboxylic acid.

What is Delta4-Cephalexin Diketopiperazine used for?

Delta4-Cephalexin Diketopiperazine is supplied as a characterised reference material related to Cephalexin. 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 Delta4-Cephalexin Diketopiperazine can I order?

We supply Delta4-Cephalexin Diketopiperazine 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 Delta4-Cephalexin Diketopiperazine?

Yes. Every lot of Delta4-Cephalexin Diketopiperazine 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 Delta4-Cephalexin Diketopiperazine be shipped internationally?

Yes. We export Delta4-Cephalexin Diketopiperazine worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.