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45245

Sigma-Aldrich

Eosin 5-isothiocyanate

≥95.0% (UV)

Synonym(s):

EITC

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About This Item

Empirical Formula (Hill Notation):
C21H7Br4NO5S
CAS Number:
60520-47-0
Molecular Weight:
704.96
MDL number:
MFCD00082502
UNSPSC Code:
12352200
PubChem Substance ID:
57650268

Assay

≥95.0% (UV)

fluorescence

λex 521; λem 544 (pH 9.0)

storage temp.

2-8°C

SMILES string

OC(=O)c1cc(ccc1C2=C3C=C(Br)C(=O)C(Br)=C3Oc4c(Br)c(O)c(Br)cc24)N=C=S

InChI

1S/C21H7Br4NO5S/c22-12-4-10-14(8-2-1-7(26-6-32)3-9(8)21(29)30)11-5-13(23)18(28)16(25)20(11)31-19(10)15(24)17(12)27/h1-5,27H,(H,29,30)

InChI key

MCXYFYWNOWPDMA-UHFFFAOYSA-N

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Application

Eosin 5-isothiocyanate (EITC) is a fluorescence probe. EITC tagged molecules may be used together with fluorescein-5′-isothiocyanate (FITC) tagged molecules in fluoresce resonance energy transfer (FRET) based assays.

Other Notes

Acceptor fluorophore. Measurement of rotational diffusion of proteins; In fluorescence energy transfer studies

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H317 - H334

Precautionary Statements

P261 - P280 - P342 + P311

Hazard Classifications

Resp. Sens. 1 - Skin Sens. 1

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCF9397
BCCB8383
BCBZ5677
BCBW2640
BCBV2697

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Ya-lan Wu et al.
Guang pu xue yu guang pu fen xi = Guang pu, 24(12), 1597-1600 (2005-04-15)
In this paper, the medium (pH, organic solvent and surfactant) effects on fluorescence of eosin-5-isothiocyanate (eosin-ITC) have been studied in detail. The results show that the pH and polarity of system studied are two great important influence factors on fluorescence
M Schindler et al.
The Journal of cell biology, 92(3), 742-746 (1982-03-01)
Chemical modification of amino groups in matrix porin solubilized and purified from outer membranes of Escherichia coli in beta-octylglucoside was performed with eosin isothiocyanate and citraconic anhydride. At pH 7 8.5, the former reagent labeled a single amino group in
R Wagner et al.
European journal of biochemistry, 173(3), 561-568 (1988-05-02)
Phosphoenolpyruvate carboxylase, purified from maize leaves, is rapidly inactivated by the fluorescence probe dansyl chloride. The loss of activity can be ascribed to the covalent modification of an R-NH2 group, presumably the epsilon-NH2 group of lysine. Analysis of the data
R Mittal et al.
Biochemistry, 33(33), 10178-10184 (1994-08-23)
We have used resonance energy transfer to read out the interactions of the alpha subunit of transducin (alpha T) with the transducin beta gamma subunit complex (beta gamma T) and to compare the rate of aluminum fluoride-induced alpha T activation
Yan Fu et al.
Journal of immunological methods, 289(1-2), 57-64 (2004-07-15)
A solid substrate room temperature phosphorescence immunoassay (SS-RTP-IA) for the determination of human complement3 (C3) based on a sandwich type assay and a labelled avidin-biotin (LAB) type assay was described. The anti-human complement3 and avidin were labeled with eosin5-isothiocyanate. On
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