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F2456
Fluorescein (freie Säure)
Dye content 95%, Powder
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About This Item
Empirische Formel (Hill-System):
C20H12O5
CAS-Nummer:
Molekulargewicht:
332.31
Farbindexnummer:
45350:1
Beilstein:
94324
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12171500
PubChem Substanz-ID:
NACRES:
NA.47
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Produktbezeichnung
Fluorescein (freie Säure), Dye content 95 %
Form
powder
Qualitätsniveau
Zusammensetzung
Dye content, 95%
Methode(n)
titration: suitable
Farbe
orange to red-brown
mp (Schmelzpunkt)
320 °C (lit.)
λmax
496 nm
ε (Extinktionskoeffizient)
≥12000 at 282-286 nm
≥39000 at 236-240 nm
≥70000 at 488-492 nm
Anwendung(en)
diagnostic assay manufacturing
hematology
histology
Lagertemp.
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
InChIKey
GNBHRKFJIUUOQI-UHFFFAOYSA-N
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Allgemeine Beschreibung
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.
Anwendung
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.
Signalwort
Warning
H-Sätze
P-Sätze
Gefahreneinstufungen
Eye Irrit. 2
Lagerklassenschlüssel
11 - Combustible Solids
WGK
WGK 3
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Persönliche Schutzausrüstung
Eyeshields, Gloves, type N95 (US)
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| F2456-2.5G | 4061835347650 |
| F2456-100G | 4061835347643 |
| F2456-500G | 4061833612927 |
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