Fluorescein

CAS Registry Number®

2321-07-5

CAS Name

Fluorescein

Molecular Formula

C20H12O5

Molecular Mass

332.31

Cite this Page

Fluorescein.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=2321-07-5 (retrieved 2024-11-24) (CAS RN: 2321-07-5).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    315 °C (decomp)

Source(s)

  • (1) PhysProp data were obtained from Syracuse Research Corporation of Syracuse, New York (US)

Other Names and Identifiers

InChI

InChI=1S/C20H12O5/c21-11-5-7-15-17(9-11)24-18-10-12(22)6-8-16(18)20(15)14-4-2-1-3-13(14)19(23)25-20/h1-10,21-22H

InChIKey

InChIKey=GNBHRKFJIUUOQI-UHFFFAOYSA-N

SMILES

O=C1OC2(C=3C1=CC=CC3)C=4C(OC=5C2=CC=C(O)C5)=CC(O)=CC4

Canonical SMILES

O=C1OC2(C3=CC=C(O)C=C3OC4=CC(O)=CC=C42)C=5C=CC=CC15

Other Names for this Substance

  • Spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 3′,6′-dihydroxy-
  • Fluorescein
  • 3′,6′-Dihydroxyspiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one
  • Resorcinolphthalein
  • 3′,6′-Fluorandiol

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Deleted or Replaced CAS Registry Numbers

518-46-7, 126605-73-0, 213880-86-5, 770677-61-7, 2921593-00-0

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