Description

3,4-Dihydro-1H-2-Benzopyran-1-One is a versatile heterocyclic organic compound that serves as a key intermediate in advanced chemical synthesis. Its unique benzopyranone structure makes it a valuable building block for the development of complex molecules with specific biological and material properties. This compound is primarily sought after by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for creating novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those targeting neurological and cardiovascular pathways.
• Agrochemical Research: Used as a core scaffold for developing new herbicides, fungicides, and plant growth regulators.
• Organic Synthesis Building Block: Employed in constructing complex heterocyclic compounds for material science and chemical research.
• Fragrance and Flavor Chemistry: Serves as a starting material for synthesizing specific aroma chemicals and flavorants due to its benzopyranone backbone.
• Dye and Pigment Intermediate: Utilized in the production of specialized dyes and organic pigments.
• Academic and R&D Laboratories: A standard reagent for methodological studies in organic chemistry and medicinal chemistry programs.

Basic Information

Product Name	3,4-Dihydro-1H-2-Benzopyran-1-One
CAS No.	4702-34-5
Molecular Formula	C9H8O2
Molecular Weight	148.16 g/mol
Synonyms	1H-2-Benzopyran-1-one, 3,4-dihydro-; 3,4-Dihydroisocoumarin; 3,4-Dihydro-1H-isochromen-1-one; Isocoumaran-1-one; NSC 403697; 3,4-Dihydro-1-isocoumarone; 3,4-Dihydrocoumarin (Note: not to be confused with the 2H-1-benzopyran isomer)
EINECS	225-175-1

Quality Control

Our 3,4-Dihydro-1H-2-Benzopyran-1-One is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting all critical quality parameters.

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 strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Melting Point	48 - 52 °C
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.