Indigo Carmine 5,7-Isomer

Name: Indigo Carmine 5,7-Isomer
Brand: Vaqora Chemicals
SKU: VQ-031199

About Indigo Carmine 5,7-Isomer

Listed under CAS 27414-68-2, Indigo Carmine 5,7-Isomer is an impurity of Indigo Carmine available from Vaqora Chemicals. Formula C16H8N2Na2O8S2, molecular weight 466.4 g/mol. Common synonyms include Indigo Carmine 5,7-Isomer Disodium.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

As a characterised impurity of Indigo Carmine, 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.

Vaqora Chemicals supplies Indigo Carmine 5,7-Isomer in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

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

Industries

Related to Indigo Carmine

View every impurity, metabolite and intermediate we list for Indigo Carmine.

Indigo Carmine impurities

Specifications & identifiers

Chemical identifiers
Product name	Indigo Carmine 5,7-Isomer
Catalogue No.	VQ-031199
CAS Number	27414-68-2
IUPAC name	disodium;2-(3-hydroxy-5-sulfonato-1H-indol-2-yl)-3-oxoindole-7-sulfonate
Molecular formula	C₁₆H₈N₂Na₂O₈S₂
Molecular weight	466.4 g/mol
Exact mass	465.9517
Grade	Reference Standard
HSN code	38229090
InChIKey	PSSLQRLGCUULDM-UHFFFAOYSA-L
SMILES	C1=CC2=C(C(=C1)S(=O)(=O)[O-])N=C(C2=O)C3=C(C4=C(N3)C=CC(=C4)S(=O)(=O)[O-])O.[Na+].[Na+]
PubChem CID	135565030

Physical properties
Physical form	Solid
H-bond donors / acceptors	2 / 9
TPSA	197 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 Indigo Carmine 5,7-Isomer?

The CAS Registry Number of Indigo Carmine 5,7-Isomer is 27414-68-2. It is also known as Indigo Carmine 5,7-Isomer Disodium, Disodium 2-(1,3-dihydro-3-oxo-7-sulphonato-2H-indol-2-ylidene)-3-oxoindoline-5-sulphonate, Disodium 3,3'-dioxo-1,1',3,3'-tetrahydro-2,2'-biindole-5,7'-disulfonate.

What is the molecular formula and molecular weight of Indigo Carmine 5,7-Isomer?

Indigo Carmine 5,7-Isomer has the molecular formula C16H8N2Na2O8S2 and a molecular weight of 466.4 g/mol.

What is Indigo Carmine 5,7-Isomer used for?

Indigo Carmine 5,7-Isomer is supplied as a characterised reference material related to Indigo Carmine. 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 Indigo Carmine 5,7-Isomer can I order?

We supply Indigo Carmine 5,7-Isomer 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 Indigo Carmine 5,7-Isomer?

Yes. Every lot of Indigo Carmine 5,7-Isomer 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 Indigo Carmine 5,7-Isomer be shipped internationally?

Yes. We export Indigo Carmine 5,7-Isomer worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.