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45260

Sigma-Aldrich

Eosin B

for microscopy (Fl., Hist.), adsorption and fluorescent indicator

Sinónimos:

4′,5′-Dibromo-2′,7′-dinitrofluorescein disodium salt, Acid Red 91, Eosin Scarlet, Eosin bluish, Saffrosine

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About This Item

Fórmula lineal:
C20H6N2O9Br2Na2
Número de CAS:
548-24-3
Peso molecular:
624.06
Colour Index Number:
45400
Beilstein/REAXYS Number:
4121964
EC Number:
208-943-1
MDL number:
MFCD00005041
UNSPSC Code:
12171500
PubChem Substance ID:
329756626
NACRES:
NA.47

grade

adsorption and fluorescent indicator
for microscopy (Fl., Hist.)

technique(s)

titration: suitable

λmax

509-524 nm

SMILES string

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

InChI

1S/C20H8Br2N2O9.2Na/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);;/q;2*+1/p-2

InChI key

GYYTYUGGVBYJHE-UHFFFAOYSA-L

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General description

Eosin B is a fluorescent red dye that is used in microscopy to visualise cytoplasm and proteins like collagen.

Application

Eosin B is an adsorption and fluorescent indicator in microscopy.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Chloé E Atreya et al.
The Journal of biological chemistry, 278(16), 14092-14100 (2003-01-31)
Protozoal parasites are unusual in that their thymidylate synthase (TS) and dihydrofolate reductase (DHFR) enzymes exist on a single polypeptide. In an effort to probe the possibility of substrate channeling between the TS and DHFR active sites and to identify
Xu Wang et al.
Electrophoresis, 31(23-24), 3808-3815 (2010-11-17)
In this study, we describe an effective visualizing technique for proteins in SDS-PAGE based on the organic dye, Eosin B, the sensitivity of which can be further strengthened by the addition of magnesium to the staining solution after electrophoresis. The
Jishu Naskar et al.
Organic & biomolecular chemistry, 9(19), 6610-6615 (2011-08-13)
Self-assembling short peptides can offer an opportunity to make useful nano-/microstructures that find potential application in drug delivery. We report here the formation of multivesicular structures from self-assembling water-soluble synthetic amphiphilic dipeptides containing a glutamic acid residue at the C-terminus.
A A Waheed et al.
Analytical biochemistry, 287(1), 73-79 (2000-11-18)
Eosin B and eosin Y have been used to estimate micro- and submicrogram quantities of proteins respectively as shown in our previous reports. In the present study we describe the mechanism of eosin binding to proteins. At pH lower than
A A Waheed et al.
Journal of biochemical and biophysical methods, 42(3), 125-132 (2000-03-29)
Eosin B is used to estimate proteins above 1 microg/ml concentration [Waheed AA, Gupta, PD. Anal. Biochem. 1996:233:249-256; Waheed AA, Gupta PD. J. Biochem. Biophys. Meth. 1996;33:187-196]. In the present report we describe a method for estimating submicrogram quantities of
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