Eosin B

CAS: 548-24-3

Ref. 02-A17377

Product Information

• Name: Eosin B
• Synonyms: eosin B, ,5'-Dibromo-2',7'-dinitrofluorescein, disodium salt, Acid Red 91, Dibromodinitrofluorescein sodium, Disodium 4',5'-Dibromo-2',7'-Dinitro-3-Oxo-Spiro[Isobenzofuran-1,9'-Xanthene]-3',6'-Diolate, Eosin B, high purity biological stain, Eosin BA, Eosin Bluish, Eosin scarlet, Eosine B, Eosine BA, Eosine BN, Eosine BNX, Eosine I Bluish, Eosine Scarlet, Fluorescein, 4′,5′-dibromo-2′,7′-dinitro-, disodium salt, Saffrosine, Simacid Nitro Eosin 24669, Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-dinitro-, disodium salt, Spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 4′,5′-dibromo-3′,6′-dihydroxy-2′,7′-dinitro-, disodium salt, Spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 4′,5′-dibromo-3′,6′-dihydroxy-2′,7′-dinitro-, sodium salt (1:2), disodium 2-(4,5-dibromo-2,7-dinitro-6-oxido-3-oxo-3H-xanthen-9-yl)benzoate
• CAS: 548-24-3

Description

Eosin B sodium salt is a cell and tissue stain. Eosin B sodium salt is used as a counter stain for collagen, as a tissue stain for cell granules, nuclei, and microorganisms when coupled with Azure A (sc-203729), and as a stain for cell differentiation of the anterior pituitary. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

• Brand: Alfa Aesar By Thermo Fisher Scientific

Chemical properties

• Molecular weight: 624.06
• Formula: C₂₀H₆Br₂N₂Na₂O₉
• Color/Form: Powder, Dark green to red/brown or dark brown
• InChI key: GYYTYUGGVBYJHE-UHFFFAOYSA-L