Description

Exciton Coumarin 545 is a high-purity, light-sensitive organic dye belonging to the coumarin family, identified by CAS No. 85642-11-1. This compound is valued for its excellent photostability and bright, efficient fluorescence, making it a critical component in advanced optical applications. It is primarily sought after by manufacturers and researchers in the photovoltaic, laser technology, and analytical chemistry sectors for its reliable performance.

Application

• Laser Dyes: As a gain medium in tunable dye lasers, particularly in the blue-green spectral region.
• Organic Light-Emitting Diodes (OLEDs): As a dopant or emissive layer material to enhance color purity and efficiency.
• Fluorescent Sensors and Probes: For chemical sensing and bio-imaging applications due to its sensitive emission properties.
• Photovoltaic Research: As a component in dye-sensitized solar cells (DSSCs) for light-harvesting.
• Optical Brighteners: In high-value applications requiring specific fluorescence characteristics.
• Academic and Industrial R&D: For photophysical studies and the development of new photonic materials.

Basic Information

Product Name	Exciton Coumarin 545
CAS No.	85642-11-1
Molecular Formula	C24H15NO4
Molecular Weight	381.38 g/mol
Synonyms	Coumarin 545; C545; 2,3,5,6-1H,4H-Tetrahydro-8-methylquinolizino[9,9a,1-gh]coumarin; 9-(2-Carboxyphenyl)-2,3,5,6,7,8-hexahydro-1H,4H-11-oxa-3a-aza-benzo[de]anthracen-10-one; Exciton C545; Laser Grade Coumarin 545; Basic Yellow 2 (related class)
EINECS	Contact for details

Quality Control

Our Exciton Coumarin 545 is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and high performance. Each lot undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for absorbance/emission profiles, and identity confirmation (IR). A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and R&D documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Absorption Max (λmax)	~450-460 nm (in ethanol)
Emission Max (λem)	~480-495 nm (in ethanol)
Loss on Drying	≤ 1.0 %
Residue on Ignition	≤ 0.5 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.