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
• 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

Red No.230(2) for TLC RS

CAS: 17372-87-1

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

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