Description

2-Chloro-5,6-Dihydrobenzo[B]Thiophen-7(4H)-One is a high-purity, versatile heterocyclic building block of significant interest in advanced organic synthesis. This compound matters as a key intermediate for constructing complex molecular architectures, particularly in the development of novel active pharmaceutical ingredients (APIs) and functional materials. It is primarily needed by research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and other therapeutic areas.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, leveraging its unique fused-ring thiophene structure.
• Material Science Research: Serves as a building block for creating organic semiconductors, conductive polymers, and other advanced functional materials.
• Chemical Research & Development: Employed in academic and industrial R&D for exploring new heterocyclic chemistry, reaction pathways, and catalytic processes.
• Custom Synthesis & Contract Manufacturing: A key starting material for custom synthesis projects and scale-up manufacturing for clients requiring specific, complex molecules.

Basic Information

Product Name	2-Chloro-5,6-Dihydrobenzo[B]Thiophen-7(4H)-One
CAS No.	19945-37-0
Molecular Formula	C8H7ClOS
Molecular Weight	186.66 g/mol
Synonyms	2-Chloro-4,5,6,7-tetrahydro-1-benzothiophen-7-one; 2-Chloro-4,5,6,7-tetrahydrobenzo[b]thiophen-7-one; 7(4H)-Benzothiophenone, 2-chloro-5,6-dihydro-; 2-Chloro-5,6-dihydro-7(4H)-benzothiophenone; 2-Chloro-4,5,6,7-tetrahydro-1-benzothiophen-7(4H)-one
EINECS	Contact for details

Quality Control

Our 2-Chloro-5,6-Dihydrobenzo[B]Thiophen-7(4H)-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all relevant specifications. Our quality commitment supports applications requiring high standards, including pharmaceutical R&D.

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 incompatible materials such as strong oxidizing agents, strong bases, and strong acids. For long-term storage, consider storing under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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