Description

5,6-Dihydro-4-Oxo-4H-Thieno[2,3-B]Thiine-2-Sulfonamide is a high-purity, specialized heterocyclic sulfonamide building block of significant interest in advanced organic synthesis. This compound matters for its role as a critical intermediate in the development of novel active pharmaceutical ingredients (APIs) and agrochemicals, where its unique fused thiophene-thiine scaffold offers valuable structural diversity. It is primarily needed by research institutions and industrial R&D departments in the pharmaceutical, agrochemical, and fine chemical sectors focused on creating new molecules with targeted biological activities.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, metabolic diseases, or possessing anti-inflammatory properties.
• Agrochemical Research: Serves as a core structure for developing new generations of herbicides, fungicides, or insecticides with improved efficacy and environmental profiles.
• Material Science Chemistry: Used in the research and development of advanced organic electronic materials, such as novel semiconductors or charge-transport materials, due to its electron-deficient heterocyclic system.
• Chemical Biology Probe Development: Employed as a scaffold for creating selective enzyme inhibitors or molecular probes to study biological pathways.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for the production of bespoke compounds for client-specific research programs.
• Academic & Institutional Research: Utilized in universities and government labs for fundamental studies in heterocyclic chemistry, medicinal chemistry, and reaction methodology development.

Basic Information

Product Name	5,6-Dihydro-4-Oxo-4H-Thieno[2,3-B]Thiine-2-Sulfonamide
CAS No.	105951-31-3
Molecular Formula	C7H7NO3S3
Molecular Weight	273.33 g/mol
Synonyms	5,6-Dihydro-4-oxo-4H-thieno[2,3-b]thiopyran-2-sulfonamide; 4H-Thieno[2,3-b]thiine-2-sulfonamide, 5,6-dihydro-4-oxo-; Thieno[2,3-b]thiine-2-sulfonamide, 5,6-dihydro-4-oxo-4H-; 2-Sulfamoyl-5,6-dihydro-4H-thieno[2,3-b]thiine-4-one; CAS 105951-31-3
EINECS	Contact for details

Quality Control

Our 5,6-Dihydro-4-Oxo-4H-Thieno[2,3-B]Thiine-2-Sulfonamide is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods (NMR, IR, MS), to ensure it meets the high standards required for research and development applications. Certificates of Analysis (COA) detailing batch-specific results are provided with every shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). This compound may be moisture-sensitive; keep the container tightly sealed in a dry environment.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%

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