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CAS 518-47-8

:

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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Found 16 products.
  • Uranine

    CAS:
    Formula:C20H10Na2O5
    Purity:>95.0%(HPLC)
    Color and Shape:Amber to Brown powder to crystal
    Molecular weight:376.27

    Ref: 3B-F0096

    25g
    22.00€
    100g
    59.00€
    500g
    176.00€
  • Fluorescein disodium salt hydrate

    CAS:
    <p>Fluorescein disodium salt hydrate is used in dye, ink pigment, in cosmetic products, to detect corneal epithelial defects, and also used as a fluorescent tracer to study blood-brain barrier. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some</p>
    Formula:C20H10Na2O5
    Color and Shape:Dark red to brown or dark orange, Powder
    Molecular weight:376.28

    Ref: 02-A11659

    100g
    46.00€
    500g
    137.00€
    2500g
    350.00€
  • Fluorescein disodium salt

    CAS:
    <p>Fluorescein disodium salt, 518-47-8, also known as uranin or acid yellow 73, is a xanthene indicator dye used as a fluorescent tracer or labeling agent. Learn more.</p>
    Formula:C20H10Na2O5
    Color and Shape:Dark brownish-red to brownish-orange, dark orange-red, Powder
    Molecular weight:376.28

    Ref: 02-J61549

    100g
    40.00€
    500g
    88.00€
  • Sodium 3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-bis(olate)

    CAS:
    Formula:C20H10Na2O5
    Purity:95%
    Color and Shape:Solid
    Molecular weight:376.2699

    Ref: IN-DA00I99B

    25g
    28.00€
    50g
    31.00€
    100g
    37.00€
    500g
    86.00€
  • Fluorescein Sodium

    CAS:
    Fluorescein Sodium (VST-1001) is a phthalic indicator dye. It is used therapeutically as a diagnostic aid in corneal injuries and corneal trauma.
    Formula:C20H10Na2O5
    Purity:97.05%
    Color and Shape:Dark Red Solid Crystalline Powder
    Molecular weight:376.27
  • Fluorescein sodium salt, 98% (C.I. 45350)

    CAS:
    Formula:C20H10Na2O5
    Purity:≥ 98.0% (anhydrous)
    Color and Shape:Dark brown-red to brown-orange powder
    Molecular weight:376.28

    Ref: 7W-GT3976

    100g
    53.00€
  • Fluorescein Disodium Salt

    CAS:
    Fluorescein Disodium Salt
    Purity:IND
    Molecular weight:376.27g/mol

    Ref: 54-OR1013319

    25g
    32.00€
    100g
    36.00€
    25kg
    2,538.00€
    500g
    71.00€
    2.5kg
    306.00€
  • Fluorescein Sodium

    CAS:
    Fluorescein Sodium
    Purity:≥95%
    Molecular weight:376.27g/mol

    Ref: 54-BUP17497

    1g
    92.00€
    5g
    198.00€
    200mg
    51.00€
    500mg
    64.00€
  • Fluorescein sodium salt, USP grade, 95% (C.I. 45350)

    CAS:
    Formula:C20H10Na2O5
    Purity:95.0 - 102.0 %
    Color and Shape:Dark brown-red to brown-orange powder
    Molecular weight:376.28

    Ref: 7W-GT9711

    ne
    To inquire
  • Sodium 3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-bis(olate)

    CAS:
    Purity:95.0%
    Color and Shape:Solid
    Molecular weight:376.03236198

    Ref: 10-F319861

    1kg
    134.00€
    25g
    13.00€
    100g
    24.00€
    250g
    67.00€
    500g
    83.00€
  • Fluorescein disodium

    CAS:
    Formula:C20H10O5Na
    Color and Shape:Neat
    Molecular weight:376.27

    Ref: 04-C13750000

    100mg
    112.00€
  • Fluorescein sodium salt, 90% (C.I. 45350)

    CAS:
    Formula:C20H10Na2O5
    Purity:90.0 - 102.0 % (dried basis)
    Color and Shape:Dark brown-red to brown-orange powder
    Molecular weight:376.28

    Ref: 7W-GT1410

    100g
    27.00€
    500g
    79.00€
  • Fluorescein Sodium Salt

    Controlled Product
    CAS:
    <p>Stability Hygroscopic<br>Applications Fluorescein sodium salt is a sodium salt of fluorescein. It can also be used in technical or engineered material use in-situ photochemical fabrication of transition metal-​promoted amorphous molybdenum sulfide catalysts for enhanced photosensitized hydrogen evolution. Dyes and metabolites, Environmental Testing<br>References Hou, J., et al.: Int J Hydrogen Energ, 42, 11118 (2017)<br></p>
    Formula:C20H10O5·2Na
    Color and Shape:Dark Red
    Molecular weight:376.27

    Ref: TR-F537563

    100g
    97.00€
    250g
    127.00€
  • Fluorescein disodium salt

    CAS:
    <p>Fluorescein sodium is a fluorescent dye that is used in a wide variety of applications, including fluorescence angiography, histology, and immunohistochemistry. Fluorescein sodium binds to the receptor binding sites of proteins and cells, which then emit light when excited by a laser. It is also used in asthma therapy to assess lung function and for process optimization in industries where fluorescence detectors are used. This substance has been shown to be effective for the treatment of proliferative diabetic retinopathy in both diabetic patients and animals. Fluorescein sodium can cause allergic reactions and chemical reactions if it comes into contact with skin or mucous membranes.</p>
    Formula:C20H10O5·2Na
    Purity:Min. 95%
    Color and Shape:Red Powder
    Molecular weight:376.28 g/mol

    Ref: 3D-FF09633

    1kg
    860.00€
  • Fluorescein Sodium Salt (C.I. No. 45350)

    CAS:
    Formula:C20H10Na2O5
    Color and Shape:Orange red to green brown to dark brown, Powder, Clear
    Molecular weight:376.28

    Ref: SR-55091

    1kg
    Discontinued
    25g
    Discontinued
    100g
    Discontinued
    Discontinued product
  • Fluorescein Sodium Salt (C.I. No. 45350) for cell culture, Endotoxin (BET) 0.05EU/mg

    CAS:
    Formula:C20H10Na2O5
    Color and Shape:Orange red to green brown to dark brown, Powder, Clear
    Molecular weight:376.28

    Ref: SR-98131

    100g
    Discontinued
    Discontinued product