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: [Na].O=C1OC2(C=3C=CC=CC13)C4=CC(Br)=C(O)C(Br)=C4OC5=C(Br)C(O)=C(Br)C=C52

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
• Eosin Y
• 2-(2,4,5,7-tetrabromo-6-hydroxy-3-oxo-3H-xanthene-9-yl)benzoic acid, disodium salt
• Eosin ys
• phloxine red 20-7600
• C.I. Acid Red 87
• Bromo fluorescein
• Spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 2′,4′,5′,7′-tetrabromo-3′,6′-dihydroxy-, sodium salt (1:2)
• 2,4,5,7-Tetrabromofluorescein (Sodium salt)
• Eosine YS
• benzoate, 2-(2,4,5,7-tetrabromo-6-olato-3-oxo-3H-xanthen-9-yl)-, sodium salt (1:3)
• bromo jps
• Tetrabromofluorescein Sodium Salt
• Acid Red 87~C.I. 45380
• Sodium eosine
• 2',4',5',7'-tetrabromofluorescein disodium salt
• hidacid white bromo
• Eosin
• D & C Red No. 22
• Eosin Yellowish
• 9-(o-Carboxyphenyl)-2,4,5,7-tetrabromo-3,6-dihydroxyxanthene, sodium salt
• bromo ts
• eosine g
• 2',4',5',7'-Tetrabromo-3',6'-dihydroxy-spiro[3H-isobenzofuran-1,9'-xanthen]-3-one disodium salt
• hidacid boiling bromo
• bromo x-100
• symuler eosin toner
• bromo 4dc
• Eosine yellowish-(YS)
• Bromofluoresceic acid
• aizen eoxine gh
• bronze bromo
• eosine yy
• eosine bpc
• Fluorescein, 2′,4′,5′,7′-tetrabromo-, disodium salt
• hidacid eosine soda salt
• bromo fl
• disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxo-3H-xanthen-9-yl)benzoate
• Eosin Y Sodium Salt
• C.I. 45380
• fenazo eosine xg
• bromo acid
• Disodium eosin
• certiqual eosine
• eosin disodium
• Spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 2′,4′,5′,7′-tetrabromo-3′,6′-dihydroxy-, disodium salt
• Acid Red 87 (C.I.)
• irgalite bronze red cl
• 2',4',5',7'-Tetrabromo-3',6'-dihydroxy-spiro[3H-isobenzofuran-1,9'-xanthen]-3-one dipotassium salt
• Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,2',4',5',7'-tetrabromo-3',6'-dihydroxy-,disodium salt(?)
• 2,4,5,7-tetrabromo-9-o-carboxyphenyl-6-hydroxy-3-isoxanthone, disodium salt
• Eosin Y, high purity biological stain
• Acid red 87
• sodium eosinate
• 2,4,5,7-Tetrabromo-3,6-dihydroxyxanthene-9-spiro-1'-3H-isobenzofuran-3'-one disodium salt
• Eosine YSK
• D&C 22
• 11445 red
• 2,4,5,7-Tetrabromo-3,6-dihydroxyxanthene-9-spiro-1'-3H-isobenzofuran-3'-one dipotassium salt
• Bromo B
• bromo xx

Eosin Yellow (water soluble) ACS

CAS: 17372-87-1

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

Eosin Yellowish

CAS: 17372-87-1

Eosin Yellowish noted to reduce the affinity of Mg2+-ATPase for ATP and increase the enzyme …

• Formula: C₂₀H₆Br₄Na₂O₅
• Color and Shape: Powder, Red to brown
• Molecular weight: 691.86

Field's Stain B

CAS: 17372-87-1

Used to stain blood smears to identify malarial parasites This Thermo Scientific Chemicals brand product …

• Formula: C₂₀H₆Br₄Na₂O₅
• Color and Shape: Pink to red/dark red, Crystals, powder or crystalline powder
• Molecular weight: 691.86

Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,2',4',5',7'-tetrabromo-3',6'-dihydroxy-, disodium salt

CAS: 17372-87-1

• Formula: C₂₀H₈Br₄NaO₅
• Purity: 80%
• Color and Shape: Solid
• Molecular weight: 670.8802900000001

AMI5

CAS: 17372-87-1

• Purity: ≥60%
• Molecular weight: 691.85g/mol

AMI5

CAS: 17372-87-1

AMI5 (Eosin Y Disodium) is a soluble acidic red dye molecule. It is commonly used …

• 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: 17372-87-1

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

Acid Red 87

CAS: 17372-87-1548-26-5

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

Acid Red 87

CAS: 17372-87-1

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

Eosin

CAS: 17372-87-1

• Formula: C₂₀H₆Br₄Na₂O₅
• Molecular weight: 691.86

Red No.230(2) for TLC RS

CAS: 17372-87-1

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

Red No.230(1) for TLC RS

CAS: 17372-87-1

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

Eosin Y disodium salt

CAS: 17372-87-1

Eosin Y, a red xanthene dye, has been noted to reduce the affinity of Mg2+-ATPase …

• Formula: C₂₀H₆Br₄Na₂O₅
• Purity: Min. 95%
• Color and Shape: Brown Powder
• Molecular weight: 691.85 g/mol

Eosin Yellow (water soluble) for cell culture, Endotoxin (BET) 1EU/mg

CAS: 17372-87-1

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

Eosin Y, pure, high purity, biological stain

CAS: 17372-87-1

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. …

• Formula: C₂₀H₆Br₄Na₂O₅
• Color and Shape: Red to brown, Crystalline powder
• Molecular weight: 691.86

Eosin Y, pure, certified

CAS: 17372-87-1

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. …

• Formula: C₂₀H₆Br₄Na₂O₅
• Color and Shape: Red to brown, Powder
• Molecular weight: 691.86

Eosin Y, pure, Indicator grade

CAS: 17372-87-1

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. …

• Formula: C₂₀H₆Br₄Na₂O₅
• Color and Shape: Dark red-brown, Crystalline powder
• Molecular weight: 691.86