Molecular properties
- Formula
- C20H12O5
- Molar mass
- 332.30 g·mol−1
- Exact mass
- 332.0685 Da
- 15
- 2
- 5
- 76.00 Ų
- 3.4 (PubChem computed XLogP3-AA descriptor)
- CAS
- 2321-07-5
- PubChem CID
- 16850
Molecule record
fluorescein
C20H12O5
332.30 g/mol
Interactions
- Polarity
- Often polar; exact polarity depends on size, substitution, and ionization state.
- Acid-base behavior
- Review ionizable groups and pKa data where available; ChemForge does not infer definitive acid-base state from identity alone.
- Intermolecular forces
- Assess dispersion, dipole interactions, hydrogen bonding, and ionic character from the functional groups shown.
Functional groups
Alcohol
Alkene
Aromatic ring
Ester
Phenol
Physical properties
| Property | Value | Conditions | Source |
|---|---|---|---|
| Logp | 3.4 | PubChem computed XLogP3-AA descriptor | PubChem(link only) |
Common names and synonyms
- 11712 Yellow
- 2321-07-5
- 3',6'-Dihydroxyfluoran
- 3,6-Fluorandiol
- C.I. Solvent Yellow 94
- D and C Yellow No. 7
- D&C Yellow No. 7
- Fluorescein Red
Show all 21 synonyms
- Fluorescein acid
- Fluoresceine
- Fluoreszein
- Hidacid fluorescein
- Japan Yellow 201
- Japan Yellow No. 201
- Resorcinolphthalein
- Soap Yellow F
- Solvent Yellow 94
- Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 3',6'-dihydroxy-
- Yellow 7
- Yellow fluorescein
- Zlut kysela 73
Structure identifiers
- Canonical SMILES
- C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O
- Isomeric SMILES
- C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O
- 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
- GNBHRKFJIUUOQI-UHFFFAOYSA-N
- PubChem CID
- 16850
Spectroscopy
Tabs appear only for spectra stored with clear provenance.
Simulated FTIR trace
Predicted FTIR / %T
4 cm-1 resolution / deterministic instrument profile
Hover for cursor
Peak assignments
3350 cm−1broad O-H (simulated)
1740 cm−1C=O ester (simulated)
1180 cm−1C-O ester (simulated)
1645 cm−1C=C alkene (simulated)
3030 cm−1aromatic C-H (simulated)
1600 cm−1aromatic C=C (simulated)
2960 cm−1sp3 C-H (simulated)
Simulated NMR
On-demand educational prediction for fluorescein; not experimental data.
Simulated EI mass spectrum
On-demand educational fragmentation for fluorescein; not experimental data.
Sources
Molecule identity
Retrieved 8/7/2026. Reuse status is summarized by the badge; open the source for full details.
simulated IR
ChemForge original educational simulation.