Date published: 2026-4-25

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Fluorescin (CAS 518-44-5)

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Alternate Names:
Leucofluorescein; Resorcinolphthali
Application:
Fluorescin is a fluorescent probe
CAS Number:
518-44-5
Molecular Weight:
334.32
Molecular Formula:
C20H14O5
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Fluorescin is a fluorescent probe in biology used to detect protein location and activation, identify protein complex formation and conformational changes, and monitor biological processes. It is a member of the xanthene family of dyes, which are organic compounds that absorb light and emit light. When light hits Fluorescin, it is absorbed by the dye and then re-emitted as a different color. This process is known as fluorescence resonance energy transfer (FRET). Fluorescin can be used in a variety of laboratory experiments, such as fluorescence microscopy, flow cytometry, and fluorescence spectroscopy.


Fluorescin (CAS 518-44-5) References

  1. Transfer of fluorescin from Ps. pyocyanea to colonies of other bacteria.  |  HURST, L. and LOWBURY, EJ. 1952. J Clin Pathol. 5: 359-60. PMID: 13011227
  2. Influence of the concentration of iron on the production of fluorescin by Pseudomonas aeruginosa.  |  TOTTER, JR. and MOSELEY, FT. 1953. J Bacteriol. 65: 45-7. PMID: 13022627
  3. Two simple media for the demonstration of pyocyanin and fluorescin.  |  KING, EO., et al. 1954. J Lab Clin Med. 44: 301-7. PMID: 13184240
  4. Fluorophotometric determination of hydrogen peroxide with fluorescin in the presence of cobalt (II) and reaction against other reactive oxygen species.  |  Nakahara, R., et al. 2009. J Fluoresc. 19: 769-75. PMID: 19255831
  5. Enhancement of the nonlinear optical properties of fluorescin doped boric-acid glass through cooling.  |  Tompkin, WR., et al. 1990. Appl Opt. 29: 3921-6. PMID: 20577314
  6. [Serotyping and analysis of produced pigments kinds by Pseudomonas aeruginosa clinical isolates].  |  Nedeljković, NS., et al. 2011. Vojnosanit Pregl. 68: 923-9. PMID: 22191308
  7. Ethanol Attenuates Histiotrophic Nutrition Pathways and Alters the Intracellular Redox Environment and Thiol Proteome during Rat Organogenesis.  |  Jilek, JL., et al. 2015. Toxicol Sci. 147: 475-89. PMID: 26185205
  8. Delivery of Cargo with a Bioelectronic Trigger.  |  Hemmatian, Z., et al. 2018. ACS Appl Mater Interfaces. 10: 21782-21787. PMID: 29905062
  9. Diabetic Macular Edema: State of Art and Intraocular Pharmacological Approaches.  |  Gurreri, A. and Pazzaglia, A. 2021. Adv Exp Med Biol. 1307: 375-389. PMID: 32488606
  10. Stable dual-emissive fluorescin@UiO-67 metal-organic frameworks for visual and ratiometric sensing of Al3+ and ascorbic acid.  |  Yang, L., et al. 2021. Spectrochim Acta A Mol Biomol Spectrosc. 261: 120068. PMID: 34147733
  11. Incidence and identification of Pseudomonas fluorescens and Pseudomonas putida in the clinical laboratory.  |  Blazevic, DJ., et al. 1973. Appl Microbiol. 25: 107-10. PMID: 4631431

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Fluorescin, 5 g

sc-396650
5 g
$193.00