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Substance Name: Eosin B
RN: 548-24-3
UNII: OMS4XQD1T0
InChIKey: QGAYMQGSQUXCQO-UHFFFAOYSA-L

Note

  • A red fluorescein dye used as a histologic stain. It may be cytotoxic, mutagenic, and inhibit certain mitochondrial functions.

Molecular Formula

  • C20-H8-Br2-N2-O9.2Na

Molecular Weight

  • 624.0604
 

Classification Codes

  • Coloring Agents
  • Fluorescent Dyes
  • Indicators and Reagents
  • Luminescent Agents
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Names and Synonyms

Name of Substance

  • Eosin B

MeSH Heading

  • Eosine I Bluish

Synonyms

  • AI3-63053
  • C.I. 45400
  • C.I. Acid Red 91
  • Dibromodinitrofluorescein sodium
  • EINECS 208-943-1
  • Eosin B
  • Eosin BA
  • Eosine B
  • Eosine BA
  • Eosine BN
  • Eosine BNX
  • Eosine I bluish
  • Saffrosine
  • UNII-OMS4XQD1T0

Systematic Names

  • 2-(4,5-Dibromo-3,6-dihydroxy-2,7-dinitroxanthen-9-yl)-benzoic acid, disodium salt
  • Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-dinitro-, disodium salt
  • Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-dinitro-, sodium salt (1:2)

Registry Numbers

CAS Registry Number

  • 548-24-3

FDA UNII

  • OMS4XQD1T0

Other Registry Numbers

  • 134829-78-0
  • 163515-69-3
  • 658700-92-6

System Generated Number

  • 0000548243

Molecular Formulas

Molecular Formula

  • C20-H8-Br2-N2-O9.2Na

Molecular Formula Fragments

  • C20-H8-Br2-N2-O9
  • COMPONENT
  • Na

Structure Descriptors

InChI

1S/C20H8Br2N2O9.2Na/c21-13-15(25)11(23(28)29)5-9-17(13)32-18-10(6-12(24(30)31)16(26)14(18)22)20(9)8-4-2-1-3-7(8)19(27)33-20;;/h1-6,25-26H;;/q;2*+1/p-2

InChIKey

QGAYMQGSQUXCQO-UHFFFAOYSA-L

Smiles

c1ccc2c(c1)C(=O)OC23c4cc(c(c(c4Oc5c3cc(c(c5Br)[O-])[N+](=O)[O-])Br)[O-])[N+](=O)[O-].[Na+].[Na+]

Physical Properties

Physical Property Value Units Temp (deg C) Source
log P (octanol-water) -2.960 (none)   EST
Atmospheric OH Rate Constant 2.48E-11 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.