Description

7-Chloro-3,4-Dihydro-2H-1-Benzopyran is a versatile heterocyclic organic compound that serves as a critical synthetic intermediate in advanced chemical manufacturing. Its value lies in its functionalized chroman core, which provides a key scaffold for constructing more complex molecules with targeted biological or material properties. This compound is essential for research and development chemists and process engineers in the pharmaceutical, agrochemical, and fine chemical industries seeking to develop novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, cardiovascular diseases, and anti-inflammatory agents.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, and fungicides, leveraging its chlorinated chroman structure.
• Fine Chemical Production: Serves as a precursor for dyes, pigments, and other specialty chemicals requiring a substituted benzopyran moiety.
• Material Science Research: Investigated as a monomer or additive in the development of polymers and advanced organic materials with specific optical or electronic properties.
• Academic & Contract Research: A valuable reagent for methodological development in organic synthesis and medicinal chemistry research within universities and CROs.

Basic Information

Product Name	7-Chloro-3,4-Dihydro-2H-1-Benzopyran
CAS No.	3722-70-1
Molecular Formula	C9H9ClO
Molecular Weight	168.62 g/mol
Synonyms	7-Chlorochroman; 7-Chloro-3,4-dihydro-2H-chromene; 7-Chloro-2H-chromene; 7-Chloro-3,4-dihydro-2H-1-benzopyran; 2H-1-Benzopyran, 7-chloro-3,4-dihydro-; 7-Chloro-3,4-dihydro-2H-1-benzopyrane; 7-Chloro-3,4-dihydro-2H-chromene
EINECS	223-074-5

Quality Control

Our 7-Chloro-3,4-Dihydro-2H-1-Benzopyran is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) detailing specifications such as assay, impurity profile, and physical characteristics. Our quality commitment supports compliance with cGMP and ISO standards for reliable integration into your critical synthesis workflows.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. The product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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