Merck
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F2456

Sigma-Aldrich

Fluorescein (free acid)

Dye content 95 %

Empirical Formula (Hill Notation):
C20H12O5
CAS Number:
Molecular Weight:
332.31
Número de índice de color:
45350:1
Beilstein:
94324
Número de EC:
Número MDL:
ID de la sustancia en PubChem:
NACRES:
NA.47

Nivel de calidad

200

formulario

powder

composición

Dye content, 95%

mp

320 °C (lit.)

solubilidad

1 M NaOH: 1 mg/mL

λmax

496 nm

ε (extinction coefficient)

≥12000 at 282-286 nm
≥39000 at 236-240 nm
≥70000 at 488-492 nm

application(s)

diagnostic assay manufacturing
hematology
histology

temp. de almacenamiento

room temp

SMILES string

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

InChI key

GNBHRKFJIUUOQI-UHFFFAOYSA-N

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

Envase

2.5, 100, 500 g in glass bottle

pictogramas

Exclamation mark

Palabra de señalización

Warning

Frases de peligro

Consejos de prudencia

Clasificaciones de peligro

Eye Irrit. 2

Código de clase de almacenamiento

13 - Non Combustible Solids

WGK

WGK 3

Punto de inflamabilidad F

Not applicable

Punto de inflamabilidad C

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type N95 (US)

Certificate of Analysis

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Certificate of Origin

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