Erythrosine

Name: Erythrosine
Brand: Vaqora Chemicals
SKU: VQ-019493

About Erythrosine

Erythrosine (CAS 16423-68-0) is an impurity of Tartrazine offered by Vaqora Chemicals. Its molecular formula is C20H8I4O5 and its molecular weight is 835.9 g/mol. The IUPAC name is 3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one. It is also known as Erythrosine B or Erythrosine B Disodium salt.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Handle it with standard laboratory precautions and appropriate personal protective equipment.

As a characterised impurity of Tartrazine, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

We offer Erythrosine 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 Tartrazine

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

Tartrazine impurities

Specifications & identifiers

Chemical identifiers
Product name	Erythrosine
Catalogue No.	VQ-019493
CAS Number	16423-68-0
IUPAC name	3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one
Molecular formula	C₂₀H₈I₄O₅
Molecular weight	835.9 g/mol
Exact mass	835.6551
Grade	Reference Standard
HSN code	32049000
InChIKey	OALHHIHQOFIMEF-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C(=O)OC23C4=CC(=C(C(=C4OC5=C(C(=C(C=C35)I)O)I)I)O)I
PubChem CID	3259

Physical properties
Physical form	Solid
LogP (XLogP3)	6
H-bond donors / acceptors	2 / 5
TPSA	76 Å²
Synonyms	Erythrosine B, Erythrosine B Disodium salt, FD & C red no. 3, 3',6'-dihydroxy-2',4',5',7'-tetraiodospiro(2-benzofuran-3,9'-xanthene)-1-one, Erythrosine, sodium anhydrous, Erythrosin B, Tetraiodofluorescein, Solvent Red 140, Iodeosin, Erythrosine acid, Erythrosine, phenolic, 2',4',5',7'-Tetraiodofluorescein

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 Erythrosine?

The CAS Registry Number of Erythrosine is 16423-68-0. It is also known as Erythrosine B, Erythrosine B Disodium salt, FD & C red no. 3.

What is the molecular formula and molecular weight of Erythrosine?

Erythrosine has the molecular formula C20H8I4O5 and a molecular weight of 835.9 g/mol. Its IUPAC name is 3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one.

What is Erythrosine used for?

Erythrosine is supplied as a characterised reference material related to Tartrazine. 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 Erythrosine can I order?

We supply Erythrosine 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 Erythrosine?

Yes. Every lot of Erythrosine 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 Erythrosine be shipped internationally?

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