Description

8,9-Dihydro-4H-Cyclohepta[1,2-B:5,4-B']Dithiophen-4-One is a high-purity fused heterocyclic compound, serving as a critical advanced intermediate in organic synthesis. Its unique dithiophene-fused cycloheptanone structure makes it a valuable building block for the development of novel functional materials. This product is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and materials science sectors seeking to create complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for compounds targeting central nervous system (CNS) disorders.
• Organic Electronic Materials: Serves as a core building block for organic semiconductors, conductive polymers, and non-fullerene acceptors used in organic photovoltaics (OPVs) and OLEDs.
• Agrochemical Synthesis: Used in the research and development of new-generation herbicides and fungicides with complex heterocyclic backbones.
• Ligand and Catalyst Development: Employed in the creation of specialized ligands for transition metal catalysis and organocatalysts.
• Dye and Pigment Chemistry: Acts as an intermediate for synthesizing specialized dyes and pigments with specific light-absorption properties.
• Academic and R&D: A valuable reagent for methodological studies in organic chemistry and materials science research at universities and corporate R&D centers.

Basic Information

Item	Details
Product Name	8,9-Dihydro-4H-Cyclohepta[1,2-B:5,4-B']Dithiophen-4-One
CAS No.	40033-03-2
Molecular Formula	C11H8OS2
Molecular Weight	220.31 g/mol
Synonyms	4H-Cyclohepta[1,2-b:5,4-b']dithiophen-4-one, 8,9-dihydro-; 8,9-Dihydro-4H-cyclohepta[1,2-b:5,4-b']dithiophene-4-one; Dihydrocycloheptadithiophenone; Cycloheptadithiophenone; 4-Oxo-4,8,9,10-tetrahydrocyclohepta[1,2-b:5,4-b']dithiophene
EINECS	Contact for details

Quality Control

Every batch of 8,9-Dihydro-4H-Cyclohepta[1,2-B:5,4-B']Dithiophen-4-One is manufactured and tested under a strict quality management system. We provide comprehensive analytical data to ensure the product meets the high-purity requirements for research and industrial synthesis. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is available for each lot upon request.

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.

Specification

Item	Specification
Appearance	Off-white to light yellow 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%

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