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Chemodex
Fluorescein disodium salt
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155
CHF
CHF 155.00
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CDX-F0363-G250250 gCHF 155.00
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| Product Details | |
|---|---|
| Synonyms | Fluorescein sodium salt; Sodium fluorescein; C..I. Acid Yellow 73; D and C Yellow No. 8; C.I. 45350; Ful-Glo; Uranine |
| Product Type | Chemical |
| Properties | |
| Formula | C20H10O5 . 2Na |
| MW | 378.27 |
| CAS | 518-47-8 |
| Source/Host Chemicals | Synthetic |
| Purity Chemicals | ≥98% (HPLC) |
| Appearance | Light to very dark red powder or crystals. |
| Solubility | Soluble in water. |
| Declaration | Manufactured by Chemodex. |
| Other Product Data |
Click here for Original Manufacturer Product Datasheet |
| InChi Key | MOUPEUAUBSXMLI-UHFFFAOYSA-N |
| Smiles | O=C(O1)C2=C(C=CC=C2)C31C4=CC=C(O)C=C4OC5=C3C=CC(O)=C5.[Na].[Na] |
| Shipping and Handling | |
| Shipping | AMBIENT |
| Short Term Storage | +20°C |
| Long Term Storage | +20°C |
| Handling Advice | Protect from light and moisture. |
| Use/Stability | Stable for at least 2 years after receipt when stored at RT. |
| Documents | |
| Product Specification Sheet | |
| Datasheet |
 Download PDF |
Description
Fluorescein disodium salt is a water-soluble version of fluorescein. Fluorescein is a fluorophore commonly used in microscopy, flow cytometry forensics, serology to detect latent blood stains, and in dye tracing (attached to certain biologically active molecules). Fluorescein sodium salt has been utilized in studies as a drug model, as a penetrating dye and also as a fluorescen tracer. Fluorescein has an absorption maximum at 490 nm and emission maximum of 514 nm (in water). It has a pKa at 6.4 and multiple ionization equilibria. This leads to pH dependent absorption and emission over the range of 5 to 9. It has an isoabsorptive point at 460 nm. Spectral Data: λEx=490nm, λEm=514nm.
Product References
(1) R.F. Chen; Arch. Biochem. Biophys. 133, 263 (1969) | (2) R. Sjoeback, et al.; Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 51, L7 (1995) | (3) B.L. Drees, et al.; J. Biol. Chem. 271, 32168 (1996) | (4) M. Taki, et al.; Prot. Eng. Des. Select. 17, 119 (2004) | (5) S. Yoo, et al.; Skin Res. Technol. 30, e13655 (2024)