From Wikipedia, the free encyclopedia
Chemical compound
Eosin Y
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Names
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IUPAC name
2-(2,4,5,7-tetrabromo-6-oxido-3-oxo-3H-xanthen-9-yl)benzoate [in its deprotonated form]
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Identifiers
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ChEBI
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ChEMBL
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ChemSpider
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ECHA InfoCard
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100.037.629
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MeSH
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Eosine+Yellowish-(YS)
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UNII
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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 YKey: SEACYXSIPDVVMV-UHFFFAOYSA-L YInChI=1/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 Key: SEACYXSIPDVVMV-NUQVWONBAJ
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c1ccc(c(c1)c2c3cc(c(c(c3oc-4c(c(=O)c(cc24)Br)Br)Br)[O-])Br)C(=O)[O-].[Na+].[Na+]
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Properties
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C20H6Br4Na2O5
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Molar mass
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647.89052
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Appearance
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Red powder
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Density
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1.018 g·cm−3
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Melting point
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295.5 °C (563.9 °F; 568.6 K)
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Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Eosin Y, also called
C.I. 45380
[1]
[2] or C.I. Acid Red 87,
[2]
[1] is a member of the triarylmethane dyes. It is produced from
fluorescein by
bromination.
[3]
Use
Eosin Y is commonly used as the red dye in red inks.
It is commonly used in
histology, most notably in the
H&E (
Haematoxylin and
Eosin) stain.
[1] Eosin Y is also widely used in the
Papanicolaou stain (or Pap stain used in the
Pap test) and the
Romanowsky type
cytologic stains.
[1]
[2] It is also used as a
photosensitizer in organic synthesis.
[4]
See also
References
- ^
a
b
c
d Bancroft, John; Stevens, Alan, eds. (1982). The Theory and Practice of Histological Techniques (2nd ed.). Longman Group Limited.
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a
b
c Lillie, Ralph Dougall (1977). H. J. Conn's Biological stains (9th ed.). Baltimore: Williams & Wilkins. pp. 692p.
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^ Gessner, Thomas; Mayer, Udo (2000). "Triarylmethane and Diarylmethane Dyes".
Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH.
doi:
10.1002/14356007.a27_179.
ISBN
978-3527306732.
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^ Diercxsens, Nicolas (2017-04-10), "Eosin Y", Encyclopedia of Reagents for Organic Synthesis, Chichester, UK: John Wiley & Sons, Ltd, pp. 1–3,
doi:
10.1002/047084289x.rn02033,
ISBN
978-0-470-84289-8