Fluoran

Fluoran
IUPAC name Spiro[2-benzofuran-3,9'-xanthene]-1-one
Identifiers
CAS number	596-24-7
PubChem	68994
ChemSpider	62216 Y
ChEBI	CHEBI:37915 Y
Jmol-3D images	Image 1
SMILES O=C2OC4(c1ccccc12)c5ccccc5Oc3ccccc34
InChI InChI=1S/C20H12O3/c21-19-13-7-1-2-8-14(13)20(23-19)15-9-3-5-11-17(15)22-18-12-6-4-10-16(18)20/h1-12H Y Key: FWQHNLCNFPYBCA-UHFFFAOYSA-N Y InChI=1/C20H12O3/c21-19-13-7-1-2-8-14(13)20(23-19)15-9-3-5-11-17(15)22-18-12-6-4-10-16(18)20/h1-12H Key: FWQHNLCNFPYBCA-UHFFFAOYAD
Properties
Molecular formula	C20H12O3
Molar mass	300.31
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Fluoran is a triarylmethane dye. It is the structural core of a variety of other dyes.

The chemical structure of eosin, a fluoran-based dye