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198250

Sigma-Aldrich

Rose bengal

certified by the Biological Stain Commission, Dye content ≥80 %

Synonyme(s) :

4,5,6,7-Tetrachloro-2′,4′,5′,7′-tetraiodofluorescein disodium salt, Acid Red 94, Bengal Rose B sodium salt, Rose Bengal sodium salt

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About This Item

Formule empirique (notation de Hill):
C20H2Cl4I4Na2O5
Numéro CAS:
632-69-9
Poids moléculaire :
1017.64
Numéro C.I. (Colour Index):
45440
Numéro Beilstein :
3645857
Numéro CE :
211-183-3
Numéro MDL:
MFCD00005043
Code UNSPSC :
12171500
ID de substance PubChem :
24851870
Nomenclature NACRES :
NA.47

Qualité

certified by the Biological Stain Commission

Niveau de qualité

100

Forme

powder

Composition

Dye content, ≥80%

Couleur

dark violet

Solubilité

H2O: 1 mg/mL

λmax

548 nm

ε (coefficient d'extinction)

≥90000 at 546-550 nm at 0.008 g/L

Application(s)

diagnostic assay manufacturing
hematology
histology

Température de stockage

room temp

Chaîne SMILES 

[Na+].[Na+].[O-]C(=O)c1c(Cl)c(Cl)c(Cl)c(Cl)c1C2=C3C=C(I)C(=O)C(I)=C3Oc4c(I)c([O-])c(I)cc24

InChI

1S/C20H4Cl4I4O5.2Na/c21-10-8(9(20(31)32)11(22)13(24)12(10)23)7-3-1-5(25)16(29)14(27)18(3)33-19-4(7)2-6(26)17(30)15(19)28;;/h1-2,29H,(H,31,32);;/q;2*+1/p-2

Clé InChI

UWBXIFCTIZXXLS-UHFFFAOYSA-L

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Description générale

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

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



Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)

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Certificats d'analyse (COA)

Lot/Batch Number
SHBN9281
SHBN7446
SHBN2859
SHBM7411
SHBM4755

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Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

Steffanie Heindl et al.
The Journal of experimental medicine, 218(8) (2021-05-27)
Neuroinflammation is an emerging focus of translational stroke research. Preclinical studies have demonstrated a critical role for brain-invading lymphocytes in post-stroke pathophysiology. Reducing cerebral lymphocyte invasion by anti-CD49d antibodies consistently improves outcome in the acute phase after experimental stroke models.
J Varga et al.
Studies in mycology, 69(1), 1-17 (2011-09-06)
Four new species, Aspergillus eucalypticola, A. neoniger, A. fijiensis and A. indologenus are described and illustrated. Aspergillus eucalypticola was isolated from Eucalyptus leaf from Australia, and is related to A. tubingensis and A. costaricaensis, but could clearly be distinguished from
Rebecca Sadler et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 40(5), 1162-1173 (2020-01-01)
Recovery after stroke is a multicellular process encompassing neurons, resident immune cells, and brain-invading cells. Stroke alters the gut microbiome, which in turn has considerable impact on stroke outcome. However, the mechanisms underlying gut-brain interaction and implications for long-term recovery
Y Hiasa et al.
Japanese journal of cancer research : Gann, 79(3), 314-319 (1988-03-01)
The effects of erythrosine (Red 3), rose bengal B (Red 105) and thyroidectomy on the development of thyroid tumor were examined in male Wistar rats treated with N-bis(2-hydroxypropyl)nitrosamine (DHPN). Red 3 and Red 105 were used at 4% in the
A Ito et al.
Journal of the National Cancer Institute, 77(1), 277-281 (1986-07-01)
The tumorigenicity of 9-3',4',5',6'-tetrachloro-o-carboxy phenyl-6-hydroxy-2,4,5,7-tetraiodo-3-isoxanthone sodium (CAS: 632-68-8) [also called Food Red 105 (FR 105) or Rose Bengal B], which is widely used for food or cosmetic coloring in Japan, was examined in (C57BL/6N X C3H/N)F1 mice. Animals were divided
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Protocoles

HPLC Analysis of Synthetic Food Dyes on Ascentis® Express C18

Separation of Tartrazine; Amaranth; Indigo carmine; New Coccine; Sunset Yellow FCF; Allura Red AC; Fast Green FCF; Erioglaucine disodium salt; Erythrosin B sodium salt; Phloxine B; Rose bengal

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