Date published: 2025-9-18

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Fluorescein (free acid) (CAS 2321-07-5)

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Alternate Names:
Resorcinolphthalein
Application:
Fluorescein (free acid) is the free acid form of fluorescein
CAS Number:
2321-07-5
Molecular Weight:
332.31
Molecular Formula:
C20H12O5
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

QUICK LINKS

Fluorescein (free acid) is a fluorophore that detects latent blood stains. Associated with microscopy and flow cytometry.


Fluorescein (free acid) (CAS 2321-07-5) References

  1. Comparison of micro- and mesoporous inorganic materials in the uptake and release of the drug model fluorescein and its analogues.  |  Fisher, KA., et al. 2003. Chemistry. 9: 5873-8. PMID: 14673859
  2. Studies on fluorescein-II The solubility and acid dissociation constants of fluorescein in water solution.  |  Diehl, H. and Markuszewski, R. 1985. Talanta. 32: 159-65. PMID: 18963816
  3. One-step synthesis of fluorescently labelled, single-walled carbon nanotubes.  |  Guaragno, ML., et al. 2015. Chem Commun (Camb). 51: 17233-6. PMID: 26458421
  4. Evaluation of Transdermal Drug Permeation as Modulated by Lipoderm and Pluronic Lecithin Organogel.  |  Zhang, Q., et al. 2018. J Pharm Sci. 107: 587-594. PMID: 28935590
  5. Comparing the Fate and Transport of MS2 Bacteriophage and Sodium Fluorescein in a Karstic Chalk Aquifer.  |  Matthews, D., et al. 2024. Pathogens. 13: PMID: 38392906
  6. Fluorescent protein-dye conjugates. II. Gamma globulin conjugated with various dyes.  |  Chen, RF. 1969. Arch Biochem Biophys. 133: 263-76. PMID: 4186001
  7. Nonclassical dimension-dependent kinetics of a photobleaching reaction in a focused laser beam "phototrap".  |  Lin, Anna L., et al. 1997. Physical Review E. 56.2: 1561.
  8. Structural effects on the permeability of whey protein films in an aqueous environment.  |  Bodnar, Igor, et al. 2007. Food Hydrocolloids. 21.5-6: 889-895.
  9. 154. A passive diffusion model of fluorescein derivatives in an in vitro human brain microvascular endothelial cell (HBMEC) monolayer.  |  Simmons, Jamelle M., et al. 2018. environment. 1: 3.
  10. Heterogeneous photoredox catalysis using fluorescein polymer brush functionalized glass beads.  |  Bell, Kirsten, et al. 2021. Journal of Polymer Science. 59.22: 2844-2853.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Fluorescein (free acid), 2.5 g

sc-215040
2.5 g
$30.00

Fluorescein (free acid), 100 g

sc-215040A
100 g
$49.00

Fluorescein (free acid), 250 g

sc-215040B
250 g
$110.00