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212954

Sigma-Aldrich

Eosin B

Dye content 95 %

Synonym(s):

Acid Red 91

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About This Item

Empirical Formula (Hill Notation):
C20H8Br2N2O9
CAS Number:
56360-46-4
Molecular Weight:
580.09
Colour Index Number:
45400
MDL number:
MFCD00066762
UNSPSC Code:
12171500
PubChem Substance ID:
24852757
NACRES:
NA.47

form

powder, crystals or chunks

composition

Dye content, 95%

mp

275 °C (dec.) (lit.)

solubility

spirit: soluble

λmax

522 nm

ε (extinction coefficient)

≥7000 at 515-521 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

OC(=O)c1ccccc1C2=C3C=C(C(=O)C(Br)=C3Oc4c(Br)c(O)c(cc24)[N+]([O-])=O)[N+]([O-])=O

InChI

1S/C20H8Br2N2O9/c21-14-16(25)11(23(29)30)5-9-13(7-3-1-2-4-8(7)20(27)28)10-6-12(24(31)32)17(26)15(22)19(10)33-18(9)14/h1-6,25H,(H,27,28)

InChI key

YDIYPOHFEIEJPE-UHFFFAOYSA-N

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Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Theory and Practice of Histological Techniques (2008)
Estimation of protein using eosin B dye.
Waheed AA and Gupta PD
Analytical Biochemistry, 233, 249-252 (1996)
Replacement of E-cadherin by N-cadherin in the mammary gland leads to fibrocystic changes and tumor formation.
Kotb AM
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Lizhen Han et al.
Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology], 46(2), 433-441 (2015-08-15)
An indigenous bacterial strain capable of utilizing 2,4-dichlorophenoxyacetic acid as the sole carbon and energy source was isolated from a soil used for grown wheat with a long-term history of herbicide use in Beijing, China. The strain BJ71 was identified
Juha P Laurila et al.
PloS one, 4(6), e5786-e5786 (2009-06-06)
Inflammatory cell migration characteristic of ischemic damages has a dual role providing the tissue with factors needed for tissue injury recovery simultaneously causing deleterious development depending on the quality and the quantity of infiltrated cells. Extracellular superoxide dismutase (SOD3) has
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