F2456
Fluorescein (free acid)
Dye content 95%, Powder
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About This Item
Formula empirica (notazione di Hill):
C20H12O5
Numero CAS:
Peso molecolare:
332.31
Colour Index:
45350:1
Beilstein:
94324
Numero CE:
Numero MDL:
Codice UNSPSC:
12171500
ID PubChem:
NACRES:
NA.47
Prodotti consigliati
product name
Fluorescein (free acid), Dye content 95 %
Forma fisica
powder
Livello qualitativo
Composizione
Dye content, 95%
Colore
orange to red-brown
Punto di fusione
320 °C (lit.)
λmax
496 nm
ε (coefficiente d’estinzione)
≥12000 at 282-286 nm
≥39000 at 236-240 nm
≥70000 at 488-492 nm
applicazioni
diagnostic assay manufacturing
hematology
histology
Temperatura di conservazione
room temp
Stringa SMILE
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
GNBHRKFJIUUOQI-UHFFFAOYSA-N
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Descrizione generale
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.
Applicazioni
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.
Avvertenze
Warning
Indicazioni di pericolo
Consigli di prudenza
Classi di pericolo
Eye Irrit. 2
Codice della classe di stoccaggio
11 - Combustible Solids
Classe di pericolosità dell'acqua (WGK)
WGK 3
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
Dispositivi di protezione individuale
Eyeshields, Gloves, type N95 (US)
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