Erythrosin B

Erythrosin B is a red fluorescein dye and an inhibitor of dopamine reuptake (IC50 = 45 µM in rat brain synaptosomes). It has been used in the colorimetric and fluorescent determination of protein concentrations in vitro. Formulations containing erythrosine B have been used as color additives in food and pharmaceutical preparations.Formal Name: 3',6'-dihydroxy-2',4',5',7'-tetraiodo-spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, disodium salt. CAS Number: 16423-68-0. Synonyms: Acid Red 51, Erythrosine, FD&C Red No. 3. Molecular Formula: C20H6I4O5 . 2Na. Formula Weight: 879.9. Purity: >85%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 30 mg/ml, DMSO: 30 mg/ml, Ethanol: 30 mg/ml, PBS (pH 7.2): 10 mg/ml. lambdamax: 540 nm. SMILES: O=C1OC2(C3=CC(I)=C(C(I)=C3OC4=C(C([O-])=C(C=C42)I)I)[O-])C5=C1C=CC=C5.[Na+].[Na+]. InChi Code: InChI=1S/C20H8I4O5.2Na/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,,/q,2*+1/p-2. InChi Key: RAGZEDHHTPQLAI-UHFFFAOYSA-L.