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CAS 518-47-8

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Sodium fluorescein

Description:
Sodium fluorescein, with the CAS number 518-47-8, is a synthetic organic compound belonging to the class of fluorescein dyes. It is characterized by its bright green fluorescence, which makes it useful in various applications, including biological imaging, as a tracer in hydrology, and in the field of microscopy. The compound is soluble in water and exhibits a pH-dependent fluorescence, with its emission intensity varying based on the acidity or alkalinity of the solution. Sodium fluorescein has a molecular formula of C20H10Na2O5 and a molecular weight of approximately 396.3 g/mol. It is often used in medical diagnostics, particularly in ophthalmology for fluorescein angiography, where it helps visualize blood flow in the retina. Additionally, it is utilized in environmental studies to track water movement and contamination. While generally considered safe, exposure to high concentrations may cause irritation, and appropriate safety measures should be taken when handling the substance.
Formula:C20H12O5·2Na
InChI:InChI=1S/C20H12O5.2Na/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=MOUPEUAUBSXMLI-UHFFFAOYSA-N
SMILES:O=C1OC2(C=3C1=CC=CC3)C=4C(OC=5C2=CC=C(O)C5)=CC(O)=CC4.[Na]
Synonyms:
  • 11824 Yellow
  • 12417 Yellow
  • 3,6-Dihydroxyxanthene-9-spiro-1'-3'H-isobenzofuran-3'-one
  • 3058 Uranine
  • 5(6)-Carboxyfluorescein sodium
  • ABCO Uranine
  • Abbey Uranine
  • Acid Yellow 73
  • Aizen Uranine
  • Basacid Yellow 226
  • See more synonyms
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