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Sigma-Aldrich

Coumarin 343

Dye content 97 %

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About This Item

Empirical Formula (Hill Notation):
C16H15NO4
CAS Number:
55804-65-4
Molecular Weight:
285.29
EC Number:
259-824-6
MDL number:
MFCD00051335
UNSPSC Code:
12171500
PubChem Substance ID:
24864499
NACRES:
NA.47

form

powder

composition

Dye content, 97%

mp

240 °C (lit.)

λmax

443 nm

ε (extinction coefficient)

≥26000 at 441-445 nm in ethanol at 0.01 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

OC(=O)C1=Cc2cc3CCCN4CCCc(c2OC1=O)c34

InChI

1S/C16H15NO4/c18-15(19)12-8-10-7-9-3-1-5-17-6-2-4-11(13(9)17)14(10)21-16(12)20/h7-8H,1-6H2,(H,18,19)

InChI key

KCDCNGXPPGQERR-UHFFFAOYSA-N

Related Categories

General description

Coumarin 343 is a small hydrophilic dye. It is unable to penetrate the cell membrane by itself. Coumarin 343 is also known as coumarin 519. Depending on the pH of the medium, coumarin 343 exists in neutral and anionic forms.

Application

Coumarin 343 has been used in many different applications that include solution dynamic probes, laser dyes, and organic sensitizers in dye-sensitized solar cells.

It is suitable to study photo-induced charge injection into other metal oxides such as TiO2, ZrO2, and ZnO.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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