Description

2H-1-Benzopyran-2-One, 8-Chloro- CAS NO 33491-29-1 is a specialized chlorinated coumarin derivative, a key heterocyclic building block in advanced organic synthesis. This compound is valued for its role as a versatile synthetic intermediate, enabling the development of novel molecules with targeted functionalities. It is primarily sought after by research institutions and industrial R&D departments in the pharmaceutical, agrochemical, and material science sectors for creating new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of novel drug candidates, particularly those targeting specific enzyme pathways where the coumarin scaffold is active.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and pesticides, leveraging its bioactivity as a core structure.
• Organic Light-Emitting Diodes (OLEDs): Acts as a building block for electron-transport materials or emissive layer dopants due to the photophysical properties of the coumarin core.
• Fluorescent Dyes & Probes: Employed in the synthesis of fluorescent markers and sensors for biological imaging and analytical chemistry applications.
• Material Science: Investigated as a monomer or additive for creating polymers with specific optical or electronic characteristics.
• Academic & Industrial R&D: A fundamental reagent for methodological studies in organic chemistry and for exploring new chemical reactions involving halogenated heterocycles.

Basic Information

Product Name	2H-1-Benzopyran-2-One, 8-Chloro-
CAS No.	33491-29-1
Molecular Formula	C9H5ClO2
Molecular Weight	180.59 g/mol
Synonyms	8-Chlorocoumarin; 8-Chloro-2H-chromen-2-one; 8-Chloro-2H-1-benzopyran-2-one; 8-Chloro-2-oxo-2H-chromene; 8-Chloro-2H-chromen-2-one; Coumarin, 8-chloro-; 2H-1-Benzopyran-2-one, 8-chloro-
EINECS	Contact for details

Quality Control

Our 2H-1-Benzopyran-2-One, 8-Chloro- is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for research and development. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	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.