Description

3,4-Dihydro-(1H)-Benzopyrane is a versatile heterocyclic organic compound that serves as a key synthetic intermediate and building block in advanced chemical synthesis. Its unique fused ring structure makes it a valuable precursor for developing complex molecules in pharmaceutical and agrochemical research. This compound is essential for R&D chemists and process development scientists working in fine chemical, pharmaceutical, and material science industries.

Application

• Pharmaceutical Intermediate: A crucial building block for synthesizing active pharmaceutical ingredients (APIs) and drug candidates, particularly those with chromane or related heterocyclic scaffolds.
• Agrochemical Synthesis: Used in the research and development of novel pesticides, herbicides, and plant growth regulators.
• Flavor & Fragrance Chemistry: Serves as a precursor for creating synthetic aroma compounds and flavoring agents due to its structural similarity to natural chromane derivatives.
• Material Science Research: Investigated as a monomer or precursor for specialty polymers, liquid crystals, and organic electronic materials.
• Organic Synthesis Reagent: Employed in various name reactions and as a starting material for complex natural product synthesis and methodological studies.
• Chemical Research Standard: Used as a reference standard and analytical reagent in quality control and method development laboratories.

Basic Information

Product Name	3,4-Dihydro-(1H)-Benzopyrane
CAS No.	493-08-3
Molecular Formula	C9H10O
Molecular Weight	134.18 g/mol
Synonyms	3,4-Dihydro-2H-1-benzopyran; Chromane; 2,3-Dihydro-1-benzopyran; 3,4-Dihydro-2H-chromene; 2H-Chromene, 3,4-dihydro-; 1-Benzopyran, 3,4-dihydro-; Dihydrobenzopyran; Benzodihydropyran
EINECS	207-776-4

Quality Control

Our 3,4-Dihydro-(1H)-Benzopyrane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical data, including HPLC purity, identity confirmation (IR, NMR), and impurity profiling. A Certificate of Analysis (COA) is supplied with each batch, detailing all relevant specifications. Our quality standards align with industrial and research-grade requirements, and we can support custom purity specifications upon request.

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). This compound is easily oxidized and should be stored under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.540 - 1.550
Density (20°C)	1.05 - 1.10 g/mL

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