200964

Erythrosin B

Dye content ≥95 %

• Synonym(s): Solvent Red 140
• Empirical Formula (Hill Notation): C₂₀H₈I₄O₅
• CAS Number: 15905-32-5
• Molecular Weight: 835.89
• Colour Index Number: 45430:2
• EC Number: 240-046-0
• MDL number: MFCD00005044
• UNSPSC Code: 12171500
• PubChem Substance ID: 24851985
• NACRES: NA.47

Properties

• form: powder
• Quality Level: 100
• composition: Dye content, ≥95%
• color: orange to red-orange
• mp: 303 °C (dec.) (lit.)
• solubility: 1 M NH4OH: 1 mg/mL; 1 M NH4OH: soluble 1 mg/mL, orange to red
• ε (extinction coefficient): ≥102000 at 526-534 nm at 0.005 g/L (95% Methanol 5% 0.1M Na2CO3); ≥13000 at 310-318 nm in 1 M NH4OH at 0.005 g/L (95% Methanol 5% 0.1M Na2CO3); ≥32000 at 258-266 nm at 0.005 g/L (95% Methanol 5% 0.1M Na2CO3)
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: Oc1c(I)cc2c(Oc3c(I)c(O)c(I)cc3C24OC(=O)c5ccccc45)c1I
• InChI: 1S/C20H8I4O5/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: OALHHIHQOFIMEF-UHFFFAOYSA-N

Description

Application

Erythrosin B has been used as a dye in fluorescence lifetime imaging.

Biochem/physiol Actions

Erythrosin B, also called as eosin B, is a xanthene dye. It belongs to the family of fluorescein dyes. It plays a major role in inhibiting dopamine uptake and high affinity ³H-ouabain binding and ion transport in synaptosomes from rat caudate nucleus.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves