Description

3,4-Dihydro-8-Methyl-2H-1-Benzopyran is a versatile heterocyclic organic compound belonging to the chromane (benzopyran) class, serving as a key synthetic intermediate and structural motif. Its value lies in its utility as a foundational building block for the synthesis of more complex molecules in pharmaceutical and agrochemical research. This compound is primarily needed by R&D chemists and process development scientists in the fine chemical, pharmaceutical, and life science industries.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those with chromane or benzopyran-based structures.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and plant growth regulators.
• Flavor & Fragrance Chemistry: Acts as a starting material for creating synthetic aroma chemicals and flavoring agents.
• Material Science Research: Investigated as a monomer or building block for advanced polymers and organic electronic materials.
• Academic & Contract Research: Employed in university and CRO laboratories for methodological studies and the discovery of new chemical entities.

Basic Information

Product Name	3,4-Dihydro-8-Methyl-2H-1-Benzopyran
CAS No.	3722-72-3
Molecular Formula	C10H12O
Molecular Weight	148.20 g/mol
Synonyms	8-Methylchroman; 8-Methyl-3,4-dihydro-2H-1-benzopyran; 8-Methyl-2H-chromene; 8-Methyl-3,4-dihydro-2H-chromene; 8-Methyl-2,3-dihydro-1-benzopyran; 8-Methyl-2,3-dihydrochromene; 8-Methyl-3,4-dihydro-2H-benzopyran
EINECS	223-074-7

Quality Control

Our 3,4-Dihydro-8-Methyl-2H-1-Benzopyran is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay (by GC/HPLC), identity confirmation (IR, NMR), and impurity profiles. Specifications can be tailored to meet the requirements of research, development, or cGMP manufacturing.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥97.0% (typical ≥98.5%)
Water Content (KF)	≤0.5%
Related Substances (GC/HPLC)	Individual impurity ≤1.0%; Total impurities ≤2.5%

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