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46970

Sigma-Aldrich

Fluorescein sodium salt

p.a.

Synonym(s):

Acid Yellow 73, D&C;Yellow No. 8, NaFl, NaFluo, Sodium fluorescein, Uranine

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100 G
$48.90
500 G
$173.00

About This Item

Empirical Formula (Hill Notation):
C20H10Na2O5
CAS Number:
518-47-8
Molecular Weight:
376.27
Colour Index Number:
45350
Beilstein/REAXYS Number:
3833041
EC Number:
208-253-0
MDL number:
MFCD00167039
UNSPSC Code:
12171501
PubChem Substance ID:
329757279
NACRES:
NA.32

$48.90

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grade

p.a.

form

powder

fluorescence

λex 460 nm; λem 515 nm(lit.)

SMILES string

[Na+].[Na+].[O-]c1ccc2c(Oc3cc([O-])ccc3C24OC(=O)c5ccccc45)c1

InChI

1S/C20H12O5.2Na/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;;/q;2*+1/p-2

InChI key

RGPLGPBQJOQFJS-UHFFFAOYSA-L

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General description

Fluorescein Sodium Salt (FSS) is a xanthene dye having a polycrystalline structure with a monoclinic system. Fluorescein is a synthetic organic compound available as a dark orange/red powder soluble in water and alcohol.

application

Fluorescein Sodium Salt (FSS) is used to conduct in-vivo skin studies.[1]

Xanthene fluorophores, like Fluorescein Sodium Salt (FSS), are versatile compounds used across diverse fields of chemistry and life sciences.[2]

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

423.7 °F - Pensky-Martens closed cup

flash_point_c

217.6 °C - Pensky-Martens closed cup

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL3966
BCCK5378
BCCH4984
BCCG3521
BCCF1920

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Joshua L Turnbull et al.
Journal of the American Chemical Society, 143(16), 6194-6201 (2021-04-03)
Xanthene fluorophores, like fluorescein, have been versatile molecules across diverse fields of chemistry and life sciences. Despite the ubiquity of 3-carboxy and 3-sulfonofluorescein for the last 150 years, to date, no reports of 3-phosphonofluorescein exist. Here, we report the synthesis
Jacob Beal et al.
Communications biology, 3(1), 512-512 (2020-09-19)
Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an
Beau J Fenner et al.
Investigative ophthalmology & visual science, 54(13), 8013-8019 (2013-11-14)
To determine the reliability of single- and double-zone corneal fluorescent staining compared with five-zone analysis for the prediction of dry eye disease. Prospective study of 510 subjects with dry eye disease characterized using corneal fluorescein staining, Schirmer scores, and tear
Beata Kolesinska et al.
Chemistry & biodiversity, 10(1), 1-38 (2013-01-24)
After a survey of the special role, which the amino acid proline plays in the chemistry of life, the cell-penetrating properties of polycationic proline-containing peptides are discussed, and the widely unknown discovery by the Giralt group (J. Am. Chem. Soc.
Christopher Price et al.
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research, 26(2), 277-285 (2010-08-18)
Since proposed by Piekarski and Munro in 1977, load-induced fluid flow through the bone lacunar-canalicular system (LCS) has been accepted as critical for bone metabolism, mechanotransduction, and adaptation. However, direct unequivocal observation and quantification of load-induced fluid and solute convection
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