Description

4,5-Dihydro-Thieno[2,3-O]Pyran-7,-One CAS NO 28424-70-6 is a high-purity heterocyclic organic compound featuring a fused thiophene and pyranone ring system, serving as a critical advanced intermediate in modern synthetic chemistry. Its unique molecular architecture makes it a valuable building block for constructing complex pharmacophores and functional materials. This product is essential for research and development chemists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of novel drug candidates, particularly for central nervous system (CNS) and anti-inflammatory targets.
• Agrochemical Research: Used as a core structure for developing new herbicides, fungicides, and insecticides with enhanced efficacy.
• Material Science: Acts as a precursor for organic semiconductors, conductive polymers, and advanced organic electronic materials.
• Academic & R&D: Serves as a versatile scaffold in methodological organic chemistry research and library synthesis for high-throughput screening.
• Fine Chemical Synthesis: Employed in the custom synthesis of specialty chemicals, dyes, and complex fragrance molecules.

Basic Information

Product Name	4,5-Dihydro-Thieno[2,3-O]Pyran-7,-One
CAS No.	28424-70-6
Molecular Formula	C7H6O2S
Molecular Weight	154.19 g/mol
Synonyms	4,5-Dihydrothieno[2,3-b]pyran-7-one; 4,5-Dihydro-7H-thieno[2,3-b]pyran-7-one; Thieno[2,3-b]pyran-7(4H)-one, 4,5-dihydro-; 7H-Thieno[2,3-b]pyran-7-one, 4,5-dihydro-; 28424-70-6; 4,5-Dihydro-thieno[2,3-b]pyran-7-one; Dihydrothienopyranone
EINECS	Contact for details

Quality Control

Our 4,5-Dihydro-Thieno[2,3-O]Pyran-7,-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the high standards required for research and industrial synthesis. Certificates of Analysis (COA) with full chromatographic data (HPLC/GC) are provided for every shipment, ensuring full traceability and compliance with your internal quality protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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