Eosin Y

Dye content ~99 %

Bronze Bromo ES, Bromo acid J. TS, XL, or XX, Solvent red 43, 2′,4′,5′,7′-Tetrabromofluorescein, Bromofluorescein, Eosin yellowish, Acid Red 87
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
Colour Index Number:
EC Number:
MDL number:
PubChem Substance ID:



Quality Level


Dye content, ~99%


hematology: suitable
histology: suitable


ethanol: 1 mg/mL

Featured Industry

Diagnostic Assay Manufacturing

storage temp.

room temp

SMILES string




InChI key


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Eosin Y has been used as a stain:
  • to determine the location of the brain sections
  • for staining of fixed liver tissue
  • for histological examination of brain sections from the dorsal hippocampus


5, 25 g in glass bottle

Biochem/physiol Actions

Eosin Y is a xanthene dye and is used for the differential staining of connective tissue and cytoplasm. In histopathology, it is applied as a counterstain after hematoxylin and before methylene blue. It is also used as a background stain, thereby giving contrast to the nuclear stains.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

The effects of simvastatin on hippocampal caspase-3 and Bcl-2 expression following kainate-induced seizures in rats.
Sun J, et al.
International Journal of Molecular Medicine, 30, 739-739 (2012)
Antonello Mai et al.
Journal of medicinal chemistry, 51(7), 2279-2290 (2008-03-20)
A number of new compounds bearing two ortho-bromo- and ortho, ortho-dibromophenol moieties linked through a saturated/unsaturated, linear/(poly)cyclic spacer (compounds 1- 9) were prepared as simplified analogues of AMI-5 (eosin), a recently reported inhibitor of both protein arginine and histone lysine...
An immunohistochemical analysis of SERT in the blood-brain barrier of the male rat brain.
Young LW, et al.
Histochemistry and Cell Biology, 144, 321-321 (2015)
Florian Ménard et al.
Bioorganic & medicinal chemistry, 17(22), 7647-7657 (2009-10-13)
This paper reports the synthesis and characterization of a new class of tetrabenzoporphyrins bearing glucosyl or polyamine units on meso positions to improve the targeting of cancer cells. Photocytotoxic activity of these photosensitizers was tested on cell lines HaCaT and...
Inactivation of NF-kappaB p50 leads to insulin sensitization in liver through post-translational inhibition of p70S6K.
Gao Z, et al.
The Journal of Biological Chemistry, 284, 18368-18368 (2009)

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