Description

Exciton Coumarin 498 is a high-purity, light-sensitive coumarin derivative widely used as a key functional dye and laser gain medium. Its exceptional photophysical properties, including high fluorescence quantum yield and excellent photostability, make it a critical component for advanced optical applications. This product is essential for manufacturers and researchers in the photonics, specialty chemicals, and advanced materials sectors seeking reliable performance in demanding environments.

Application

• Laser Dyes & Gain Media: A primary component in tunable dye lasers, particularly in the blue-green spectral region.
• Fluorescent Probes & Sensors: Used in the development of chemical sensors and bio-imaging agents due to its strong, stable fluorescence.
• Organic Light-Emitting Diodes (OLEDs): Serves as a dopant or host material in the emissive layer for efficient blue-green emission.
• Nonlinear Optical Materials: Employed in research and development of materials for frequency doubling and other nonlinear optical effects.
• Photovoltaic Research: Investigated as a potential sensitizer in dye-sensitized solar cells (DSSCs).
• Analytical Chemistry Standards: Used as a calibration standard in fluorescence spectroscopy and chromatography.
• Security Inks & Taggants: Incorporated into inks for anti-counterfeiting and brand protection due to its distinctive fluorescent signature.
• Polymer & Coating Additives: Imparts fluorescent properties to plastics, paints, and coatings for aesthetic or functional purposes.

Basic Information

Product Name	Exciton Coumarin 498
CAS No.	87331-48-4
Molecular Formula	C20H19NO4
Molecular Weight	337.37 g/mol
Synonyms	Coumarin 498; 7-Diethylamino-4-methylcoumarin; C498; 4-Methyl-7-diethylaminocoumarin; 7-(Diethylamino)-4-methyl-2H-chromen-2-one; Exciton Laser Dye 498; DMAC; Coumarin 4M; 4-Methyl-7-(diethylamino)coumarin
EINECS	Contact for details

Quality Control

Our Exciton Coumarin 498 is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for purity assessment and spectroscopic methods for identity confirmation. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided even during handling.

Specification

Item	Specification
Appearance	Yellow to greenish-yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0% (Area %)
Melting Point	72 - 76 °C
Loss on Drying	≤ 0.5 %
Fluorescence Emission Max	~470 - 490 nm (Solvent dependent)
Residual Solvents (GC)	Meets ICH guidelines

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