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CAS 2321-07-5

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Fluorescein

Description:
Fluorescein, with the CAS number 2321-07-5, is a synthetic organic compound known for its vibrant fluorescent properties. It appears as a bright green powder or crystalline solid and is soluble in water, alcohol, and other organic solvents. Fluorescein is characterized by its strong fluorescence under ultraviolet light, making it widely used as a fluorescent tracer in various applications, including biological imaging, dyeing, and as a pH indicator. Its molecular structure consists of a xanthene core, which contributes to its fluorescence, and it exhibits a high molar absorptivity, enhancing its visibility in solutions. Fluorescein is non-toxic at low concentrations, but care should be taken to avoid excessive exposure. In addition to its use in scientific research, it is also employed in medical diagnostics, particularly in ophthalmology for assessing corneal integrity and in angiography. Overall, fluorescein is a versatile compound with significant utility in both laboratory and clinical settings.
Formula:C20H12O5
InChI:InChI=1/C20H12O5/c21-11-5-7-15-17(9-11)24-18-10-12(22)6-8-16(18)20(15)14-4-2-1-3-13(14)19(23)25-20/h1-10,21-22H
InChI key:InChIKey=GNBHRKFJIUUOQI-UHFFFAOYSA-N
SMILES:O=C1OC2(C=3C1=CC=CC3)C=4C(OC=5C2=CC=C(O)C5)=CC(O)=CC4
Synonyms:
  • 2-(6-Hydroxy-3-oxo-(3H)-xanthen-9-yl)benzoesaure
  • 2-(6-hydroxy-3-oxo-(3H)-xanthen-9-yl)benzoic acid
  • 3',6'-Dihydroxyfluoran
  • 3',6'-Dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one
  • 3',6'-Fluorandiol
  • 3,6-Dihydroxyspiro[xanthene-9,3'-phthalide]
  • 3′,6′-Dihydroxyfluoran
  • 3′,6′-Dihydroxyspiro[2-benzofuran-3,9′-xanthene]-1-one
  • 3′,6′-Dihydroxyspiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one
  • 3′,6′-Fluorandiol
  • See more synonyms
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