Eosin B

CAS Registry Number®

548-24-3
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CAS Name

Eosin B

Molecular Formula

C20H8Br2N2O9.2Na

Cite this Page

Eosin B.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?ref=548-24-3 (retrieved 2022-05-24) (CAS RN: 548-24-3).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

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;;

InChIKey

InChIKey=PNIVQIVRNJYFFG-UHFFFAOYSA-N

SMILES

O=C1OC2(C=3C(OC=4C2=CC(N(=O)=O)=C(O)C4Br)=C(Br)C(O)=C(N(=O)=O)C3)C=5C1=CC=CC5.[Na]

Canonical SMILES

[Na].O=C1OC2(C=3C=CC=CC13)C4=CC(=C(O)C(Br)=C4OC5=C(Br)C(O)=C(C=C52)N(=O)=O)N(=O)=O

Other Names for this Substance

  • Spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 4′,5′-dibromo-3′,6′-dihydroxy-2′,7′-dinitro-, sodium salt (1:2)
  • Fluorescein, 4′,5′-dibromo-2′,7′-dinitro-, disodium salt
  • Spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 4′,5′-dibromo-3′,6′-dihydroxy-2′,7′-dinitro-, disodium salt
  • C.I. 45400
  • Dibromodinitrofluorescein sodium

Deleted or Replaced CAS Registry Numbers

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