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CAS 17372-87-1

:

Eosin

Description:
Eosin, with the CAS number 17372-87-1, is a synthetic dye belonging to the class of xanthene dyes. It is primarily used as a biological stain in histology and cytology, allowing for the visualization of cellular structures under a microscope. Eosin is characterized by its vibrant red to pink color, which results from its conjugated double bond system that allows for effective light absorption. The dye is soluble in water and alcohol, making it versatile for various applications. Eosin is often used in combination with hematoxylin in staining protocols, where it provides contrast to the blue-stained nuclei, highlighting the cytoplasm and other cellular components. Additionally, eosin exhibits fluorescence properties, which can be utilized in fluorescence microscopy. It is important to handle eosin with care, as it can cause irritation upon contact with skin or eyes. Overall, eosin is a valuable tool in biological research and diagnostics, aiding in the study of tissue morphology and cellular characteristics.
Formula:C20H8Br4O5·2Na
InChI:InChI=1S/C20H8Br4O5.2Na/c21-11-5-9-17(13(23)15(11)25)28-18-10(6-12(22)16(26)14(18)24)20(9)8-4-2-1-3-7(8)19(27)29-20;;/h1-6,25-26H;;
InChI key:InChIKey=WUMPFXDWXTYERP-UHFFFAOYSA-N
SMILES:O=C1OC2(C=3C(OC=4C2=CC(Br)=C(O)C4Br)=C(Br)C(O)=C(Br)C3)C=5C1=CC=CC5.[Na]
Synonyms:
  • 2,4,5,7-Tetrabromo-3,6-Fluorandiol
  • 2,4,5,7-Tetrabromofluorescein
  • Bromoeosine
  • Bromofluorescein
  • Certistain
  • Dinatrium-2-(2,4,5,7-tetrabrom-6-oxido-3-oxoxanthen-9-yl)benzoat
  • Eosine
  • Shuhong
  • Tetrabromofluorescein
  • 11731 red
  • See more synonyms
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Found 15 products.
  • Eosin Yellow (water soluble) ACS

    CAS:
    Formula:C20H6Br4Na2O5
    Color and Shape:Red with bluish tinge or Brownish red, Powder, Passes test
    Molecular weight:691.85

    Ref: SR-29391

    25g
    17.00€
    100g
    24.00€
    500g
    49.00€
  • Acid Red 87

    CAS:
    Formula:C20H6Br4Na2O5
    Purity:>90.0%(E)
    Color and Shape:Orange to Brown to Dark red powder to crystaline
    Molecular weight:691.86

    Ref: 3B-T0037

    25g
    30.00€
  • Field's Stain B

    CAS:
    <p>Thermo Scientific Chemicals Field's Stain B CAS Number: 17372-87-1</p>
    Formula:C20H6Br4Na2O5
    Color and Shape:Pink to red/dark red, Crystals, powder or crystalline powder
    Molecular weight:691.86

    Ref: 02-A18578

    ne
    To inquire
  • Eosin Yellowish

    CAS:
    <p>Eosin Yellowish noted to reduce the affinity of Mg2+-ATPase for ATP and increase the enzyme affinity for Mg2+ at concentrations of 10-50 M. At higher concentrations near 100 ?M the affinity for Mg2+-ATPase for the ion-activator has been shown to be reduced. This compound has also been reported to be</p>
    Formula:C20H6Br4Na2O5
    Color and Shape:Powder, Red to brown
    Molecular weight:691.86

    Ref: 02-B24535

    50g
    33.00€
    250g
    101.00€
  • Ref: IN-DA00HZMG

    25g
    26.00€
    50g
    30.00€
    100g
    31.00€
    20kg
    1,624.00€
    25kg
    2,150.00€
    500g
    82.00€
    50kg
    2,846.00€
  • AMI5

    CAS:
    <p>AMI5</p>
    Purity:≥60%
    Molecular weight:691.85g/mol

    Ref: 54-BUP14944

    1g
    To inquire
    50mg
    To inquire
    100mg
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    500mg
    To inquire
  • AMI5

    CAS:
    <p>AMI5 (Eosin Y Disodium) is a soluble acidic red dye molecule. It is commonly used as a photoredox catalyst in organic synthesis.Cost-effective and quality-assured.</p>
    Formula:C20H6Br4Na2O5
    Purity:64.47% - 89.01%
    Color and Shape:Brown Solid Powder
    Molecular weight:691.85
  • Eosin Y disodium salt (C.I. 45380)

    CAS:
    Formula:C20H6Br4Na2O5
    Purity:≥ 88.0%
    Color and Shape:Dark red to brown powder
    Molecular weight:691.86

    Ref: 7W-GT2884

    25g
    22.00€
    100g
    63.00€
    250g
    118.00€
  • Acid Red 87

    CAS:
    Formula:C20H6Br4O5Na
    Color and Shape:Neat
    Molecular weight:691.85

    Ref: 04-C10028840

    100mg
    114.00€
  • Eosin

    CAS:
    Formula:C20H6Br4Na2O5
    Molecular weight:691.86

    Ref: 4Z-D-164048

    5mg
    To inquire
    10mg
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    25mg
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    50mg
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    100mg
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  • Red No.230(1) for TLC RS

    CAS:
    Color and Shape:Yellow-Brown To Red-Brown Solid Grains Or Powder

    Ref: 2K-4015000021

    100mg
    To inquire
  • Red No.230(2) for TLC RS

    CAS:
    Color and Shape:Yellow-Brown To Red-Brown Solid Grains Or Powder

    Ref: 2K-4016000021

    100mg
    To inquire
  • Eosin Y disodium salt

    CAS:
    <p>Eosin Y, a red xanthene dye, has been noted to reduce the affinity of Mg2+-ATPase for ATP and increase the enzyme affinity for Mg2+ at concentrations of 10-50 μM. At higher concentrations near 100 μM the affinity for Mg2+-ATPase for the ion-activator has been shown to be reduced. This compound has also been reported to be a photosensitizer that works as a molecular photoelectrode via catalyzation of the visible-light-driven electron-transfer reaction. Eosin Y has been used to stain structures such as muscle, cytoplasm, and collagen. This agent also enhances fluorescent quenching abilities by forming a complex with polyvinulpyrrolidone.</p>
    Formula:C20H6Br4Na2O5
    Purity:Min. 95%
    Color and Shape:Brown Powder
    Molecular weight:691.85 g/mol

    Ref: 3D-FE01492

    1kg
    679.00€
    2kg
    965.00€
    250g
    305.00€
    500g
    477.00€
  • Eosin Y Chembeads (0.03μmol/mg)

    CAS:
    Purity:95%
    Molecular weight:687.67

    Ref: 10-F556433

    5g
    136.00€
  • Eosin Yellow (water soluble) for cell culture, Endotoxin (BET) 1EU/mg

    CAS:
    Formula:C20H6Br4Na2O5
    Color and Shape:Brownish red, Powder
    Molecular weight:691.85

    Ref: SR-81614

    25g
    39.00€
    100g
    70.00€