Clorsulon-13C6

About Clorsulon-13C6

Clorsulon-13C6 is a stable isotope labelled analogue related to Clorsulon carrying the CAS registry number 1325559-24-7. Formula C13H10Cl2N2O5, molecular weight 351.09 g/mol. It is also known as Niclosamide-13C6 (monohydrate).

It is supplied 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.

Its mass shift relative to the unlabelled analyte makes it a dependable internal standard for LC-MS/MS assays, improving accuracy in bioanalysis, therapeutic drug monitoring and method validation. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

We offer Clorsulon-13C6 in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide. SDS and detailed specification sheets can be requested with your quotation.

Typical applications

LC-MS/MS internal standard
Bioanalytical quantitation
Pharmacokinetic studies

Industries

Related to Clorsulon

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

Clorsulon impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Clorsulon-13C6
Catalogue No.	VQ-047856
CAS Number	1325559-24-7
IUPAC name	5-chloro-N-(2-chloro-4-nitro(1,2,3,4,5,6-13C6)cyclohexa-1,3,5-trien-1-yl)-2-hydroxybenzamide;hydrate
Molecular formula	C₁₃H₁₀Cl₂N₂O₅
Molecular weight	351.09 g/mol
Exact mass	350.0168
Grade	Reference Standard
HSN code	38229090
InChIKey	ZBXRPLQCPHTHLM-GHTRJKFOSA-N
SMILES	C1=CC(=C(C=C1Cl)C(=O)N[13C]2=[13C]([13CH]=[13C]([13CH]=[13CH]2)[N+](=O)[O-])Cl)O.O
PubChem CID	71312569

Physical properties
Physical form	Solid
H-bond donors / acceptors	3 / 5
TPSA	96.2 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 Clorsulon-13C6?

The CAS Registry Number of Clorsulon-13C6 is 1325559-24-7. It is also known as Niclosamide-13C6 (monohydrate).

What is the molecular formula and molecular weight of Clorsulon-13C6?

Clorsulon-13C6 has the molecular formula C13H10Cl2N2O5 and a molecular weight of 351.09 g/mol.

What is Clorsulon-13C6 used for?

Clorsulon-13C6 is supplied as a characterised reference material related to Clorsulon. 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 Clorsulon-13C6 can I order?

We supply Clorsulon-13C6 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 Clorsulon-13C6?

Yes. Every lot of Clorsulon-13C6 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 Clorsulon-13C6 be shipped internationally?

Yes. We export Clorsulon-13C6 worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.