Rose bengal - Biological Stain , CAS No.632-69-9

CAS: 632-69-9 Cat. No.: R104991 Summenformel: C20H2Cl4I4Na2O5 Molekulargewicht: 1017.64 Beilstein Registry Number: 3645857 EG-Nummer: 211-183-3 PubChem CID: 69438
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GRADE & PURITY Biological Stain ? Biological stain grade — dyes characterized for staining cells and tissues. Use in histology and microscopy where staining consistency matters.
Synonyms
FT-0621857 | 2,4,5,7-Tetraido(m,p,o',m')tetrachlorofluorescein, disodium salt | Acid Red 94 disodium salt | MFCD00151169 | Rose bengale (131 I) sodique [INN-French] | F20361 | R105 sodium | disodium;4,5,6,7-tetrachloro-2',4',5',7'-tetraiodo-3-oxospiro[2-b
Storage
Protected from light,Room temperature,Desiccated
Shipped In
Normal
★
Size
Deutschland (EU)
USA*
Price
Qty
10g
R104991-10g
—
4 Auf Lager
28,55€
50g
R104991-50g
—
3 Auf Lager
104,04€
250g
R104991-250g
1 Auf Lager
1 Auf Lager
411,22€
Enter a quantity for the sizes you want to add.
🧪
Why this grade

Biological Stain Biological Stain for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Protected from light,Room temperature,Desiccated Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 189 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Übersicht

Rose Bengal is the sodium salt of tetraiodotetrachlorouorescein, C20H2O5I4Cl4Na2. It is an anionic water-soluble xanthene dye.


Product Application:

Rose bengal has several microbilogical staining applications including:
Conn′s technique for bacteria in soil and Kreyberg′s stain for keratin and mucus
counterstaining hematoxylin
staining cellular inclusions, together with Bismark brown

Specifications

Synonyme
FT-0621857 | 2,4,5,7-Tetraido(m,p,o',m')tetrachlorofluorescein, disodium salt | Acid Red 94 disodium salt | MFCD00151169 | Rose bengale (131 I) sodique [INN-French] | F20361 | R105 sodium | disodium;4,5,6,7-tetrachloro-2',4',5',7'-tetraiodo-3-oxospiro[2-b
Spezifikationen & Reinheit
Biological Stain
Storage
Protected from light,Room temperature,Desiccated
Verschickt in
Normal
Note
Biological Stain
Aktionsart
INHIBITOR
Namen und Kennungen
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/488184325
Kanonisches Lächeln
C1=C2C(=C(C(=C1I)[O-])I)OC3=C(C(=C(C=C3C24C5=C(C(=C(C(=C5Cl)Cl)Cl)Cl)C(=O)O4)I)[O-])I.[Na+].[Na+]
IUPAC Name
disodium;4,5,6,7-tetrachloro-2',4',5',7'-tetraiodo-3-oxospiro[2-benzofuran-1,9'-xanthene]-3',6'-diolate
InChIKey
KCQREHTWEUECQT-UHFFFAOYSA-L
INCHI
1S/C20H4Cl4I4O5.2Na/c21-9-7-8(10(22)12(24)11(9)23)20(33-19(7)31)3-1-5(25)15(29)13(27)17(3)32-18-4(20)2-6(26)16(30)14(18)28;;/h1-2,29-30H;;/q;2*+1/p-2
Isomere SMILES
C1=C2C(=C(C(=C1I)[O-])I)OC3=C(C(=C(C=C3C24C5=C(C(=C(C(=C5Cl)Cl)Cl)Cl)C(=O)O4)I)[O-])I.[Na+].[Na+]
WGK Deutschland
3
RTECS
LM5920000
PubChem CID
69438
Molekulargewicht
1017.64
Beilstein
3645857

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
KlasseBenzopyrans
Subclass1-benzopyrans
Intermediate Tree Nodes Dibenzopyrans
Direct ParentXanthenes
Alternative Parents Diarylethers  Phthalides  Benzofuranones  Isobenzofurans  Phenoxides  Aryl chlorides  Aryl iodides  Vinylogous halides  Carboxylic acid esters  Lactones  Oxacyclic compounds  Organic metal halides  Monocarboxylic acids and derivatives  Hydrocarbon derivatives  Organic sodium salts  Organic zwitterions  Organic oxides  Organoiodides  Organochlorides  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Xanthene - Diaryl ether - Isobenzofuranone - Benzofuranone - Phthalide - Isocoumaran - Isobenzofuran - Phenoxide - Aryl chloride - Aryl halide - Aryl iodide - Benzenoid - Vinylogous halide - Carboxylic acid ester - Lactone - Organic metal halide - Carboxylic acid derivative - Oxacycle - Organic alkali metal salt - Ether - Monocarboxylic acid or derivatives - Organic oxygen compound - Organic sodium salt - Hydrocarbon derivative - Organic oxide - Organohalogen compound - Organochloride - Organoiodide - Organooxygen compound - Organic salt - Organic zwitterion - Aromatic heteropolycyclic compound
BeschreibungThis compound belongs to the class of organic compounds known as xanthenes. These are polycyclic aromatic compounds containing a xanthene moiety, which consists of two benzene rings joined to each other by a pyran ring.
External Descriptors Not available
3D-Struktur
Interaktives chemisches Strukturmodell





Zertifikate (CoA, COO, BSE/TSE und Analyse-Diagramm)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

13 results found

Lot NumberCertificate TypeDatumArtikel
K2224638Certificate of AnalysisSep 04, 2026 R104991
K2224658Certificate of AnalysisSep 04, 2026 R104991
I2519658Certificate of AnalysisAug 02, 2025 R104991
I2519659Certificate of AnalysisAug 02, 2025 R104991
I2612015Certificate of AnalysisAug 02, 2025 R104991
E2513345Certificate of AnalysisMay 06, 2025 R104991
E2513374Certificate of AnalysisMay 06, 2025 R104991
E2513375Certificate of AnalysisMay 06, 2025 R104991
A2408032Certificate of AnalysisOct 28, 2022 R104991
B2317267Certificate of AnalysisOct 28, 2022 R104991
B2317301Certificate of AnalysisOct 28, 2022 R104991
J2429196Certificate of AnalysisOct 28, 2022 R104991
K2224635Certificate of AnalysisOct 28, 2022 R104991
Chemische und physikalische Eigenschaften
EmpfindlichkeitLight sensitive.
Schmelzpunkt (°C)>300℃
Molekulargewicht1017.600 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count5
Rotatable Bond Count0
Exact Mass1017.46 Da
Monoisotopic Mass1015.46 Da
Topological Polar Surface Area81.700 Ų
Heavy Atom Count35
Formal Charge0
Complexity780.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count3
FAQs und Artikel
Citations of This Product
Lösungsrechner
Bewertungen

Kundenbewertungen

Häufig gestellte Fragen

What are the CAS number, molecular formula and molecular weight?
The CAS Number is 632-69-9, the molecular formula is C20H2Cl4I4Na2O5, and the molecular weight is 1017.64 g/mol. InChIKey KCQREHTWEUECQT-UHFFFAOYSA-L.
What does Biological Stain mean?
Biological Stain indicates that the product has been processed and tested for biological and biochemical applications. Specifications may include endotoxin limits, microbial controls, sterility, low DNase/RNase/protease activity, and verified biological activity where relevant.
How should this product be stored?
Store in a cool place, protected from light, desiccated. Keep the container tightly closed with desiccant — the material is moisture-sensitive.
How is this product shipped?
This product ships under standard ambient conditions. No temperature-controlled packaging is required.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.

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