Molecular Identity
Fluorescein
3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
PubChem CID: 16850
Fluorescein (lactone form) is a xanthene dye that is highly fluorescent, detectable even when present in minute quantities. Used forensically to detect traces of blood, in analytical chemistry as an indicator in silver nitrate titrations and in microscopy. It has a role as a radioopaque medium and a fluorescent dye. It is a polyphenol, a gamma-lactone, a xanthene dye, an oxaspiro compound, an organic heteropentacyclic compound and a member of 2-benzofurans. It is functionally related to a fluorescein (acid form).
2D Structure
Properties
C20H12O5
Molecular Formula
332.30
Molecular Weight
g/mol
332.0685
Exact Mass
Da
3.4
XLogP
Drug-like (Lipinski: < 5)
76
TPSA
Good oral absorption (< 140 A²)
2
H-Bond Donors
5
H-Bond Acceptors
522
Complexity
SMILES
Canonical SMILES
SMILES: C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)OIsomeric SMILES
SMILES: C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)OSynonyms(20)
fluorescein2321-07-5Solvent Yellow 94ResorcinolphthaleinYellow fluoresceinFluoresceineFluorescein acid3,6-FluorandiolD&C Yellow No. 73',6'-DihydroxyfluoranJapan Yellow 201D and C Yellow No. 7C.I. Solvent Yellow 94Soap Yellow FHidacid fluorescein
Data from PubChem (NCBI)
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Drug Network
Trials and conditions connected to Fluorescein
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