Coumarin 343

Product Name: Coumarin 343
CAS No.: 55804-65-4
Chemical Name: Coumarin 343
Synonyms: C-343;KMG-20;COUMARIN(RG);COUMARIN 343;COUMARIN 519;Coumarine 343;RARECHEM AL BO 1145;Exciton Coumarin 519;COUMARIN 343 (2 GMS);Coumarin343lasergrade
CBNumber: CB8681142
Molecular Formula: C16H15NO4
Formula Weight: 285.29
MOL File: 55804-65-4.mol

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Coumarin 343 Property

Melting point:: 240 °C(lit.)
Boiling point:: 574.8±50.0 °C(Predicted)
Density: 1.47±0.1 g/cm3(Predicted)
storage temp.: room temp
solubility: Chloroform: Slightly soluble: 0.1-1 mg/ml
DMSO: Slightly soluble: 0.1-1 mg/ml
form: Crystalline Powder
pka: -98.22±0.20(Predicted)
color: Orange
λmax: 443 nm
ε(extinction coefficient): ≥26000 at 441-445nm in ethanol at 0.01g/L
InChI: 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)
InChIKey: KCDCNGXPPGQERR-UHFFFAOYSA-N
SMILES: C12=C3OC(=O)C(C(O)=O)=CC3=CC3=C1N(CCC3)CCC2
EPA Substance Registry System: 1H,5H,11H-[1]Benzopyrano[6,7,8-ij]quinolizine-10-carboxylic acid, 2,3,6,7-tetrahydro-11-oxo- (55804-65-4)

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Safety

Hazard Codes: Xn
Risk Statements: 36/37/38-20/21/22
Safety Statements: 37/39-26-24/25
WGK Germany: 3
HS Code: 29349990

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 393029
Product name: Coumarin 343
Purity: Dye content 97%
Packaging: 100mg
Price: $63.4
Updated: 2025/07/31

Sigma-Aldrich

Product number: 393029
Product name: Coumarin 343
Purity: Dye content 97%
Packaging: 500mg
Price: $214.7
Updated: 2025/07/31

TCI Chemical

Product number: C2899
Product name: Coumarin 343
Packaging: 200mg
Price: $112
Updated: 2025/07/31

TRC

Product number: C725033
Product name: Coumarin 343
Packaging: 25mg
Price: $75
Updated: 2021/12/16

Chem-Impex

Product number: 38614
Product name: Coumarin 343
Packaging: 200MG
Price: $95.51
Updated: 2021/12/16

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Coumarin 343 Chemical Properties,Usage,Production

Description

Coumarin 519 is a synthetic fluorescent dye widely used in biomedical research. It serves as a valuable tool for studying drug distribution and pharmacokinetics, as well as for monitoring membrane potential and calcium signaling in live cells. Additionally, it finds applications in fluorescence microscopy, flow cytometry, and bioimaging techniques.

Chemical Properties

orange crystalline powder

Uses

Suitable as a laser dye.

Definition

ChEBI: Coumarin 343 is a member of 7-aminocoumarins. It has a role as a fluorochrome.

References

[1] G.A. REYNOLDS K. H D. New coumarin dyes with rigidized structure for flashlamp-pumped dye lasers[J]. Optics Communications, 1975, 13 3: Pages 222-225. DOI: 10.1016/0030-4018(75)90085-1

Coumarin 343 Preparation Products And Raw materials

Raw materials

Preparation Products

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Coumarin 343 Suppliers

Americas 1 Belgium 1 China 107 Europe 1 Germany 2 India 2 Japan 2 Switzerland 2 Ukraine 2 United Kingdom 1 United States 13 Global 134

J & K SCIENTIFIC LTD.

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TCI (Shanghai) Development Co., Ltd.

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Tianjin YongSheng Biotechnology Co., Ltd.

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Thermo Fisher Scientific

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Beijing innoChem Science & Technology Co.,Ltd.

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Email: ningzi.li@inno-chem.com.cn
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View Lastest Price from Coumarin 343 manufacturers

Career Henan Chemical Co

Product: Coumarin 343 55804-65-4
Price: US $7.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 100kg
Release date: 2019-08-31

55804-65-4, Coumarin 343Related Search:

4-Methylumbelliferone DICUMAROL Coumarin Coumarin-3-carboxylic acid Coumarin 153 4-O-beta-Glucopyranosyl-cis-couMaric acid 3-METHYLCINNAMIC ACID 2-HYDROXYCINNAMIC ACID 6-Methylcoumarin 2,6-Diethyl-4-methylaniline N,N,2,4,6-PENTAMETHYLANILINE 3-Phenoxypropionic acid 3-Methoxy-2-methylaniline Coumarin 338 7-Hydroxy-1,2,3,4-tetrahydroquinoline Coumarin 314 3-Diethylaminophenol Julolidine

KMG-20

COUMARIN 519

COUMARIN 343

RARECHEM AL BO 1145

Coumarin343,lasergrade

Coumarin343lasergrade

Coumarin 343, laser grade, pure

COUMARIN(RG)

Exciton Coumarin 519

10-Oxo-2,3,3a,4,5,6,10-heptahydro-11-oxa-3a-aza-1H-benzo[de]anthracene-9-carboxylic acid

11-Oxo-2,3,6,7-tetrahydro-1H,5H,11H-[1]benzopyrano[6,7,8-ij]quinolizine-10-carboxylic acid

C-343

Coumarin 343,pure,laser grade

Coumarine 343

CouMarin 343, laser grade, pure 500MG

11-oxo-2,3,5,6,7,11-Hexahydro-1H-pyrano[2,3-f]pyrido[3,2,1-ij]quinoline-10-carboxylic acid

2,3,6,7-tetrahydro-11-oxo-1h,5h,11h-[1]benzopyrano[6,7,8-ij]quinolizine-10-carboxylic acid

11-OXO-2,3,6,7-TETRAHYDRO-1H,5H,11H-PYRANO[2,3-F]PYRIDO[3,2,1-IJ]QUINOLINE-10-CARBOXYLIC ACID

COUMARIN 343 (2 GMS)

55804-65-4

C

Stains and Dyes

Stains&Dyes, A to