Description

1H-2-Benzopyran-1-One CAS NO 491-31-6 is a high-purity organic compound belonging to the benzopyranone class, serving as a versatile chemical intermediate and building block. Its defined molecular structure is critical for ensuring batch-to-batch consistency and predictable reactivity in complex synthesis pathways. This product is essential for research and development laboratories, pharmaceutical manufacturers, and fine chemical producers seeking reliable raw materials for advanced applications.

Application

• Pharmaceutical Intermediate: A key starting material or intermediate in the synthesis of active pharmaceutical ingredients (APIs) and complex drug molecules.
• Organic Synthesis Building Block: Utilized in research and development for constructing more complex heterocyclic compounds and fine chemicals.
• Agrochemical Research: Employed in the development and synthesis of novel crop protection agents and pesticides.
• Dye and Pigment Chemistry: Acts as a precursor in the manufacture of specialized dyes, pigments, and optical materials.
• Flavor and Fragrance Industry: Used in the synthesis of certain aroma chemicals and fragrance components.
• Material Science Research: Investigated as a monomer or precursor for advanced polymers and functional materials.

Basic Information

Product Name	1H-2-Benzopyran-1-One
CAS No.	491-31-6
Molecular Formula	C9H6O2
Molecular Weight	146.14 g/mol
Synonyms	2-Coumaranone; 1-Coumaranone; Benzofuran-2(3H)-one; 2,3-Dihydrobenzofuran-2-one; 2-Oxo-2,3-dihydrobenzofuran; 3-Hydroxybenzofuran; 2-Coumaranon; Dihydrobenzofuran-2-one
EINECS	207-744-7

Quality Control

Our 1H-2-Benzopyran-1-One is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets exacting standards for research and industrial use. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	47 - 51 °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.