CAS 2321-07-5: Fluorescein
Beschreibung:
Fluorescein, mit der CAS-Nummer 2321-07-5, ist eine synthetische organische Verbindung, die für ihre lebhaften fluoreszierenden Eigenschaften bekannt ist. Sie erscheint als leuchtend grünes Pulver oder kristalliner Feststoff und ist in Wasser, Alkohol und anderen organischen Lösungsmitteln löslich. Fluorescein zeichnet sich durch seine starke Fluoreszenz unter ultraviolettem Licht aus, was es weit verbreitet als fluoreszierenden Tracer in verschiedenen Anwendungen, einschließlich biologischer Bildgebung, Färbung und als pH-Indikator, macht. Seine molekulare Struktur besteht aus einem Xanthengestell, das zu seiner Fluoreszenz beiträgt, und es weist eine hohe molare Absorptionsfähigkeit auf, die seine Sichtbarkeit in Lösungen erhöht. Fluorescein ist in niedrigen Konzentrationen ungiftig, aber es sollte darauf geachtet werden, übermäßige Exposition zu vermeiden. Neben seiner Verwendung in der wissenschaftlichen Forschung wird es auch in der medizinischen Diagnostik eingesetzt, insbesondere in der Augenheilkunde zur Beurteilung der Hornhautintegrität und in der Angiographie. Insgesamt ist Fluorescein eine vielseitige Verbindung mit erheblichem Nutzen sowohl in Labor- als auch in klinischen Umgebungen.
Formel:C20H12O5
InChl: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:InChIKey=GNBHRKFJIUUOQI-UHFFFAOYSA-N
SMILES:O=C1OC2(C=3C1=CC=CC3)C=4C(OC=5C2=CC=C(O)C5)=CC(O)=CC4
Synonyme:- 2-(6-Hydroxy-3-oxo-(3H)-xanthen-9-yl)benzoesaure
- 2-(6-hydroxy-3-oxo-(3H)-xanthen-9-yl)benzoic acid
- 3',6'-Dihydroxyfluoran
- 3',6'-Dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one
- 3',6'-Fluorandiol
- 3,6-Dihydroxyspiro[xanthene-9,3'-phthalide]
- 3′,6′-Dihydroxyfluoran
- 3′,6′-Dihydroxyspiro[2-benzofuran-3,9′-xanthene]-1-one
- 3′,6′-Dihydroxyspiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one
- 3′,6′-Fluorandiol
- 9-(o-Carboxyphenyl)-6-hydroxy-3-isoxanthenone
- Weitere Synonyme anzeigen
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18 Produkte.
Fluorescein CRS
CAS:Fluorescein CRSFormel:C20H12O5Farbe und Form:Orange. Red. Powder.Molekulargewicht:332.3063Fluorescein
CAS:Synthetic organic coloring matter,nesoiFormel:C20H12O5Farbe und Form:PowderMolekulargewicht:332.3 g/molFluorescein
CAS:Applications A fluorescent tracer used for many applications. It is used in ophthalmology as a tool in the diagnosis of corneal abrasions, corneal ulcers and herpetic corneal infections. It can attach to certain biologically active molecules, thus allowing biologists to target the fluorophore to specific proteins or structures within cells. Dyes and metabolites. References Drees, B.L. et al.: J. Biol. Chem., 271, 32168 (1996); Can. Med. Assoc. J., 80, 997 (1959); Taki, M. et al.: Prot. Eng. Des. Select., 17, 119 (2004);Formel:C20H12O5Farbe und Form:NeatMolekulargewicht:332.31Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 3',6'-dihydroxy-
CAS:Formel:C20H12O5Reinheit:85%Farbe und Form:SolidMolekulargewicht:332.3063Fluorescein
CAS:Fluorescein (Solvent Yellow 94) is a phthalic indicator dye, use as a synthetic fluorescent tracer.Formel:C20H12O5Reinheit:88.59% - 88.76%Farbe und Form:Red Orthorhombic Prisms Alkaline Solutions Exhibit Intense Greenish-Yellow Fluorescence By Reflected Light Low Toxicity MayMolekulargewicht:332.31Fluorescein Free Acid (C.I. No. 45350:1), 96%
CAS:Formel:C20H12O5Reinheit:min. 96%Farbe und Form:Orange to red brown or maroon, Powder, ClearMolekulargewicht:332.31Fluorescein
CAS:Formel:C20H12O5Farbe und Form:Orange to Amber to Dark red powder to crystalMolekulargewicht:332.31Fluorescein
CAS:Fluorescein is used as a fluorescent tracer for many applications including in a type of dye laser as the gain medium, in forensics and serology to detect latent blood stains and in dye tracing. It is used to localise multiple muscular ventricular septal defects during open heart surgery and confirm the presence of any residual defects. It is applied to teeth to reveal plaque. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.Formel:C20H12O5Reinheit:90+%Farbe und Form:Powder, Orange to red to brownMolekulargewicht:332.31Fluorescein
CAS:This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.Formel:C20H12O5Farbe und Form:Red-brown to rust brown to brown, PowderMolekulargewicht:332.31Fluorescein
CAS:Fluorescein is a fluorescent molecule often used in in vitro assays, immunohistochemistry, microscopy, and clinical analytics. Fluorescein is not a natural product and was first synthesized in 1871 by Adolf von Baeyer, a later Nobel-prize winner for his work on organic dyes. Fluorescein has an absorption maximum of 494 nm and an emission maximum of 512 nm; these values can however slightly change depending on the solution medium. Fluorescein is used clinically in ophthalmology to assess the blood flow in the eye blood vessels and to detect eye injuries such as foreign bodies and possible abrasions. Interestingly, fluorescein has been found to possess peroxidase activity under certain conditions.Formel:C20H12O5Farbe und Form:PowderMolekulargewicht:332.31 g/molFluorescein
CAS:M03615 - FluoresceinFormel:C20H12O5Reinheit:90%Farbe und Form:Solid, Crystalline Powder or PowderMolekulargewicht:332.3110046386719Fluorescein (C.I. 45350.1)
CAS:Formel:C20H12O5Reinheit:95.0 - 105.0 %Farbe und Form:Orange to red powderMolekulargewicht:332.32Fluorescein, Laser Grade 99%
CAS:This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.Formel:C20H12O5Reinheit:99%Farbe und Form:Orange to red to brown, PowderMolekulargewicht:332.31
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