F2456

Fluorescein (free acid)

Dye content 95%, Powder

• Fórmula empírica (notación de Hill): C₂₀H₁₂O₅
• Número de CAS: 2321-07-5
• Peso molecular: 332.31
• Número de índice de color: 45350:1
• Beilstein: 94324
• Número CE: 219-031-8
• Número MDL: MFCD00005050
• Código UNSPSC: 12171500
• ID de la sustancia en PubChem: 24894822
• NACRES: NA.47

Propiedades

• Nombre del producto: Fluorescein (free acid), Dye content 95 %
• Formulario: powder
• Nivel de calidad: 200
• composición: Dye content, 95%
• técnicas: titration: suitable
• color: orange to red-brown
• mp: 320 °C (lit.)
• λmáx.: 496 nm
• ε (coeficiente de extinción): ≥12000 at 282-286 nm; ≥39000 at 236-240 nm; ≥70000 at 488-492 nm
• aplicaciones: diagnostic assay manufacturing; hematology; histology
• temp. de almacenamiento: room temp
• cadena SMILES: Oc1ccc2c(Oc3cc(O)ccc3C24OC(=O)c5ccccc45)c1
• InChI: 1S/C20H12O5/c21-11-5-7-15-17(9-11)24-18-10-12(22)6-8-16(18)20(15)14-4-2-1-3-13(14)19(23)25-20/h1-10,21-22H
• Clave InChI: GNBHRKFJIUUOQI-UHFFFAOYSA-N

Descripción

Descripción general

Fluorescein (free acid, CI 45350) is a xanthene dye. Fluorescein (free acid) molecule can be divided into two parts. One part contains xanthene moiety which acts as fluorophore and the other part of the molecule bears benzene moiety which is the fluorescence-controlling moiety.

Aplicación

Fluorescein (free acid) has been used as a staining agent in retinal imaging.

Fluorescein (free acid) is widely used as a fluorescent stain and trace for many living cells and tissue applications. It is also suitable as a marker for the study of motility of bile canaliculi. Some of the clinical applications are evaluating the ocular surface and delineation of brain regions lacking a blood-brain barrier to permit accurate surgical resection of malignant glioma. Fluorescein angiography helps investigate changes in retinal blood supply. Fluorescein also plays a role as a physiological tracer to characterize the salmon′s intestinal permeability (Schep et al., 1998), and for the fluorophotometric measurement of aqueous humor flow. It is widely employed as a quantum yield standard.

Información de seguridad

• Pictogramas: GHS07
• Palabra de señalización: Warning
• Frases de peligro: H319
• Consejos de prudencia: P305 + P351 + P338
• Clasificaciones de peligro: Eye Irrit. 2
• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 3
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable
• Equipo de protección personal: Eyeshields, Gloves, type N95 (US)