Description

Coumarin 337 is a high-purity laser dye and fluorescent tracer compound, identified by CAS NO 55804-68-7. It is valued for its excellent photostability and high quantum yield, making it a critical component in advanced photonic and analytical applications. This product is essential for industries and research institutions focused on laser technology, fluorescence spectroscopy, and the development of optical sensors.

Application

• Primary dye in tunable dye lasers, particularly in the blue-green spectral region.
• Fluorescent probe and tracer in biochemical and biomedical research for cell imaging and flow cytometry.
• Active medium in solid-state dye-doped polymer films and optical gain media.
• Standard reference material for calibrating fluorescence spectrometers and other photonic instruments.
• Key component in the development of organic light-emitting diodes (OLEDs) and other optoelectronic devices.
• Use in solar concentrators and luminescent solar collectors for energy applications.
• Marker in environmental monitoring and analytical chemistry for detection and quantification.

Basic Information

Product Name	Coumarin 337
CAS No.	55804-68-7
Molecular Formula	C20H19NO4
Molecular Weight	337.37 g/mol
Synonyms	7-Diethylamino-4-methylcoumarin; 4-Methyl-7-diethylaminocoumarin; C337; Coumarin 7; Coumarin 4; Laser Grade Coumarin 337; 7-(Diethylamino)-4-methyl-2H-chromen-2-one; 2H-1-Benzopyran-2-one, 7-(diethylamino)-4-methyl-
EINECS	Contact for details

Quality Control

Our Coumarin 337 is produced under strict quality management systems to ensure batch-to-batch consistency and high performance. Each lot is analyzed to meet exacting specifications for purity, fluorescence efficiency, and absence of quenching impurities. Certificates of Analysis (COA) detailing comprehensive test results, including HPLC purity and spectral characteristics, are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive and should be handled under appropriate conditions to prevent photodegradation.

Specification

Item	Specification
Appearance	Yellow to greenish-yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0% (Laser Grade)
Absorption Max (in Ethanol)	~ 430 - 435 nm
Emission Max (in Ethanol)	~ 480 - 490 nm
Fluorescence Quantum Yield	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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