The Sigma-Aldrich catalog lists 9 grades and pack sizes of Fluorescein (CAS 2321-07-5). Pick the code you need and request a quote for price and lead time from Klar Chem.
| CAS | 2321-07-5 |
|---|---|
| Molecular formula | C20H12O5 |
| Molecular weight | 332.31 g/mol |
| IUPAC name | 3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one |
| Synonyms | Solvent Yellow 94 · Resorcinolphthalein · Yellow fluorescein · Fluoresceine · Fluorescein acid · 3,6-Fluorandiol |
Irritant
⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).
| Brand | Product / grade | Code | |
|---|---|---|---|
| Sigma | FLUORESCEIN | 46955-1G-F 46955-250MG-F F2456-100G F2456-2.5G F2456-500G Y0000796 |
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| Sigma | FLUORESCEIN (FREE ACID), FOR FLUOR- | 46955-100G-F 46955-500G-F |
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| Sigma | FLUORESCEIN, UNITED STATES PHARMACOPEIA | 1277004-200MG | Request Quote |
For information only; specifications and availability are confirmed at quotation. Prices are not listed.
