Fluorescein (also called Solvent Yellow 94, Resorcinolphthalein) has the formula C20H12O5 and a molar mass of 332.3 g/mol. The model above is PubChem's computed 3D conformer: drag to rotate, scroll to zoom, and use the measurement tools to read bond lengths and angles.
Explore in 3D Space-filling model PubChem
| IUPAC name | 3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one |
|---|---|
| SMILES | C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O |
| PubChem CID | 16850 |
| Other names | Solvent Yellow 94, Resorcinolphthalein, Yellow fluorescein, Fluoresceine, Fluorescein acid |
Atoms use the standard CPK colors: carbon gray, hydrogen white, oxygen red, nitrogen blue, sulfur yellow. Switch to Spacefill to see the molecule's overall shape and size, or Stick for a clear view of the bonds. Click two atoms in distance mode to measure a bond length in ångströms.
3D coordinates are PubChem's computed conformer, one low-energy shape of the molecule. Flexible molecules can take many other shapes.