Description

3-Oxo-2,3-Dihydrobenzo[B]Thiophene 1,1-Dioxide is a high-purity, versatile sulfone derivative and a key heterocyclic building block in advanced organic synthesis. Its rigid, electron-deficient structure makes it an invaluable intermediate for constructing complex molecules with specific electronic and steric properties. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and material science industries developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, inflammation, and oncology.
• Agrochemical Synthesis: Used in the development of new-generation herbicides, fungicides, and insecticides, leveraging its heterocyclic core for bioactivity.
• Organic Light-Emitting Diode (OLED) Materials: Serves as an electron-transporting or host material component in the manufacture of efficient OLED displays and lighting.
• Polymer & Dye Chemistry: Acts as a monomer or modifier for creating high-performance polymers, resins, and specialized dyes with enhanced thermal or chemical stability.
• Academic & R&D: A valuable reagent for methodological studies in organic chemistry, including cyclization reactions and the development of new catalytic processes.
• Ligand & Catalyst Design: Utilized as a backbone for constructing sophisticated ligands used in asymmetric catalysis and metal-organic frameworks (MOFs).

Basic Information

Product Name	3-Oxo-2,3-Dihydrobenzo[B]Thiophene 1,1-Dioxide
CAS No.	1127-35-1
Molecular Formula	C8H6O3S
Molecular Weight	182.20 g/mol
Synonyms	3-Oxo-2,3-dihydro-1-benzothiophene 1,1-dioxide; 1,1-Dioxo-2,3-dihydro-1-benzothiophen-3-one; 3-Oxo-2,3-dihydrobenzo[b]thiophene-1,1-dioxide; 2,3-Dihydro-3-oxobenzo[b]thiophene-1,1-dioxide; Benzothiophene-3(2H)-one 1,1-dioxide; 3-Oxobenzothiophene 1,1-dioxide; 1,1-Dioxo-1λ6-benzo[b]thiophen-3(2H)-one
EINECS	214-424-4

Quality Control

Our 3-Oxo-2,3-Dihydrobenzo[B]Thiophene 1,1-Dioxide is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and GC-MS, to ensure identity, purity, and consistency. We provide detailed Certificates of Analysis (COA) with every shipment, confirming compliance with agreed specifications. Our quality commitment supports applications requiring GMP-grade intermediates and research-grade materials.

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 strong oxidizing agents, strong bases, and heat sources. For long-term storage, consider 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	158 - 162 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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