F2456
Fluorescein (free acid)
Dye content 95%, Powder
Iniciar sesión para ver los precios por organización y contrato.
Seleccione un Tamaño
Cambiar Vistas
Acerca de este artículo
Fórmula empírica (notación de Hill):
C20H12O5
Número CAS:
Peso molecular:
332.31
NACRES:
NA.47
PubChem Substance ID:
UNSPSC Code:
12171500
Colour Index Number:
45350:1
EC Number:
219-031-8
MDL number:
Beilstein/REAXYS Number:
94324
Servicio técnico
¿Necesita ayuda? Nuestro equipo de científicos experimentados está aquí para ayudarle.
Permítanos ayudarleNombre del producto
Fluorescein (free acid), Dye content 95 %
form
powder
Quality Level
composition
Dye content, 95%
technique(s)
titration: suitable
color
orange to red-brown
mp
320 °C (lit.)
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
storage temp.
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
General description
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.
Application
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.
signalword
Warning
hcodes
pcodes
Hazard Classifications
Eye Irrit. 2
Clase de almacenamiento
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
Elija entre una de las versiones más recientes:
¿Ya tiene este producto?
Encuentre la documentación para los productos que ha comprado recientemente en la Biblioteca de documentos.
Contenido relacionado
Ischemia-induced spreading depolarization in the retina.
Srienc AI
Journal of Cerebral Blood Flow and Metabolism, 36, 1579-1579 (2016)
Balamuralikrishna Jayaprakash et al.
Microbiome, 5(1), 138-138 (2017-10-17)
The limited understanding of microbial characteristics in moisture-damaged buildings impedes efforts to clarify which adverse health effects in the occupants are associated with the damage and to develop effective building intervention strategies. The objectives of this current study were (i)
Keisuke Kawamoto et al.
Haematologica, 103(6), 1018-1028 (2017-12-16)
The characteristics of adult patients with chronic active Epstein-Barr virus infection are poorly recognized, hindering early diagnosis and an improved prognosis. We studied 54 patients with adult-onset chronic active Epstein-Barr virus infection diagnosed between 2005 and 2015. Adult onset was