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45240

Sigma-Aldrich

Eosin Y disodium salt

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

Synonym(s):

2′,4′,5′,7′-Tetrabromofluorescein disodium salt, Acid Red 87, Bromo acid J. TS, XL, or XX, Bromofluorescein, Bronze Bromo ES, D&C;Red No. 22, Eosin yellowish

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About This Item

Empirical Formula (Hill Notation):
C20H6Br4Na2O5
CAS Number:
17372-87-1
Molecular Weight:
691.85
Colour Index Number:
45380
Beilstein:
3586809
EC Number:
241-409-6
MDL number:
MFCD00005040
UNSPSC Code:
12171500
PubChem Substance ID:
57650266

grade

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

form

powder

technique(s)

titration: suitable

solubility

H2O: may be turbid 0.1 g/10 mL, red to red-brown

density

1.018 g/cm3

εmax

≥1050 at 509-519 nm

fluorescence

λex 532 nm
λem 540 nm in H2O

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

2-8°C

SMILES string

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

InChI

1S/C20H8Br4O5.2Na/c21-11-5-9-13(7-3-1-2-4-8(7)20(27)28)10-6-12(22)17(26)15(24)19(10)29-18(9)14(23)16(11)25;;/h1-6,25H,(H,27,28);;/q;2*+1/p-2

InChI key

SEACYXSIPDVVMV-UHFFFAOYSA-L

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Certificates of Analysis (COA)

Lot/Batch Number
BCBL5031V
BCBK5180V
BCBJ2758V
BCBH6256V
BCBG5642V

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Han Shih et al.
Macromolecular rapid communications, 34(3), 269-273 (2013-02-07)
The utility of visible-light-mediated polymerization in tissue engineering has been limited due to the necessary use of potentially cytotoxic coinitiator and comonomer. Here, we report a visible-light-mediated thiol-ene hydrogelation scheme using eosin-Y as the only photoinitiator. Under visible light exposure
Han Shih et al.
ACS applied materials & interfaces, 5(5), 1673-1680 (2013-02-07)
Interfacial visible light-mediated thiol-ene photoclick reactions were developed for preparing step-growth hydrogels with multilayer structures. The effect of a noncleavage type photoinitiator eosin-Y on visible-light-mediated thiol-ene photopolymerization was first characterized using in situ photorheometry, gel fraction, and equilibrium swelling ratio.
Toshihisa Yashiro et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(48), 17212-17217 (2014-11-19)
Males and females are in conflict over genetic transmission in the evolution of parthenogenesis, because it enhances female reproductive output but deprives the males' genetic contribution. For males, any trait that coerces females into sexual reproduction should increase their fitness.
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White striping is a condition in broiler chickens characterized grossly by the occurrence of white striations, seen parallel to the direction of muscle fibers, on broiler breast fillets and thighs. Based on visual evaluation of the intensity of white striping
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Virchows Archiv : an international journal of pathology, 461(6), 629-638 (2012-10-16)
For treatment purposes, distinction between squamous cell carcinoma and adenocarcinoma is important. The aim of this study is to examine the diagnostic accuracy on lung cancer small biopsies for the distinction between adenocarcinoma and squamous cell carcinoma and relate these
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