F2456

Sigma-Aldrich

Fluorescein (free acid)

Dye content 95 %

Empirical Formula (Hill Notation):
C20H12O5
Numer CAS:
Masa cząsteczkowa:
332.31
Numer w indeksie barw:
45350:1
Beilstein/REAXYS Number:
94324
Numer EC:
Numer MDL:
Identyfikator substancji w PubChem:
NACRES:
NA.47

Poziom jakości

200

formularz

powder

skład

Dye content, 95%

zastosowania

hematology: suitable
histology: suitable

mp

320 °C (lit.)

rozpuszczalność

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

Wyróżniony przemysł

Diagnostic Assay Manufacturing

temp. przechowywania

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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Opis ogólny

Fluorescein (free acid) 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. Principle involved in the modulation of its fluorescence properties has been described. Its uptake by zeolite NaX and the mesoporous zeotype MCM-41 has been investigated. It is widely employed as quantum yield standard.

Zastosowanie

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

Opakowanie

2.5, 100, 500 g in glass bottle

piktogramy

Exclamation mark

Hasło ostrzegawcze

Warning

Zwroty wskazujące rodzaj zagrożenia

Zwroty wskazujące środki ostrożności

hazcat

Eye Irrit. 2

storage_class_code

13 - Non Combustible Solids

WGK Germany

WGK 3

Temperatura zapłonu °F

Not applicable

Temperatura zapłonu °C

Not applicable

Środki ochrony indywidualnej

Eyeshields, Gloves, type N95 (US)

Certyfikat analizy

Świadectwo pochodzenia

Mi Ju Son et al.
Medicine, 98(29), e16527-e16527 (2019-07-25)
Several studies have found that obesity is associated with atopic dermatitis (AD); however, the mechanisms underlying the association are largely unknown. This study aims to assess the association of AD with obesity in the Korean population and verify its mechanism...
Valentina Vitale et al.
Journal of equine veterinary science, 79, 9-12 (2019-08-14)
The distinction between lower respiratory tract infections caused by Rhodococcus equi and those caused by other pathogens is difficult. The aim of this retrospective study was to describe cytological findings in bronchoalveolar lavage fluid (BALF) of foals with pneumonia caused...
J J Riesz et al.
Physical review. E, Statistical, nonlinear, and soft matter physics, 76(2 Pt 1), 021915-021915 (2007-10-13)
We report the transition dipole strength of eumelanin (the principal human photoprotective pigment) in the ultraviolet and visible. We have used both theoretical (density functional) and experimental methods to show that eumelanin is not an unusually strong absorber amongst organic...
Lesley-Ann Gray et al.
The Journal of infectious diseases, 216(11), 1460-1470 (2017-10-14)
Rheumatic heart disease (RHD) after group A streptococcus (GAS) infections is heritable and prevalent in Indigenous populations. Molecular mimicry between human and GAS proteins triggers proinflammatory cardiac valve-reactive T cells. Genome-wide genetic analysis was undertaken in 1263 Aboriginal Australians (398...
Karen A Fisher et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 9(23), 5873-5878 (2003-12-16)
The uptake of the three species of the drug model fluorescein (fluorescein sodium salt (FNa), fluorescein free acid (F), and fluorescein diacetate (FDA)) by zeolite NaX and the mesoporous zeotype MCM-41 was investigated as well as their release rates into...

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