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Merck

46970

Fluorescein sodium salt

p.a.

Synonym(s):

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

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€ 87,00

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About This Item

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

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Product Name

Fluorescein sodium salt, p.a.

InChI key

RGPLGPBQJOQFJS-UHFFFAOYSA-L

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

SMILES string

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

grade

p.a.

form

powder

fluorescence

λex 460 nm; λem 515 nm(lit.)

Quality Level

100

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1 of 4

This Item
1.039921.038871.08462
Fluorescein sodium salt p.a.

Sigma-Aldrich

46970

Fluorescein sodium salt

Fluorescein sodium (C.I. 45350) extra pure

SAFC

1.03992

Fluorescein sodium (C.I. 45350)

Fluorescein sodium (C.I. 45350) indicator Reag. Ph Eur

Supelco

1.03887

Fluorescein sodium (C.I. 45350)

Uranine AP (C.I. 45350) concentrated for the examination of subterranean waters

Supelco

1.08462

Uranine AP (C.I. 45350)

grade

for source staining, p.a.

grade

-

grade

-

grade

-

fluorescence

λex 460 nm; λem 515 nm(lit.)

fluorescence

-

fluorescence

-

fluorescence

-

form

powder

form

powder

form

powder

form

powder

Quality Level

100

Quality Level

100

Quality Level

200

Quality Level

200

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]

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.

Storage Class

11 - Combustible Solids

wgk

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
BCCN5565
BCCL3966
BCCK5378
BCCH4984
BCCG3521

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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
Sara Seabrooke et al.
American journal of physiology. Cell physiology, 305(5), C558-C567 (2013-06-28)
The blood-brain barrier (BBB) physiologically isolates the brain from the blood and, thus, plays a vital role in brain homeostasis. Ion transporters play a critical role in this process by effectively regulating access of chemicals to the brain. Organic anion-transporting
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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