Description

(S)-6-Methyl-5,6-Dihydro-4H-Thieno[2,3-B]Thiopyran-4-One is a high-purity chiral building block and advanced pharmaceutical intermediate of significant commercial interest. Its value lies in its specific stereochemistry and fused heterocyclic structure, which is crucial for synthesizing biologically active molecules. This compound is primarily needed by research institutions and pharmaceutical companies engaged in the development of novel therapeutic agents, particularly in medicinal chemistry and process R&D.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and development of new active pharmaceutical ingredients (APIs).
• Medicinal Chemistry Research: Used as a core scaffold or building block for constructing compound libraries in drug discovery programs.
• Asymmetric Synthesis: Serves as a precursor or reagent in stereoselective synthesis due to its defined (S)-configuration.
• Process Chemistry Development: Employed in scaling up and optimizing synthetic routes for potential drug candidates.
• Chemical Biology Probes: Can be utilized to develop tool compounds for studying biological pathways and target validation.

Basic Information

Product Name	(S)-6-Methyl-5,6-Dihydro-4H-Thieno[2,3-B]Thiopyran-4-One
CAS No.	147086-79-1
Molecular Formula	C9H10OS2
Molecular Weight	198.31 g/mol
Synonyms	(S)-6-Methyl-4,5,6,7-tetrahydrothieno[2,3-b]thiopyran-4-one; (S)-6-Methyl-4,5,6,7-tetrahydrothieno[2,3-b]thiopyran-4-one; (S)-6-Methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-one; (4S)-6-Methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-one; Thieno[2,3-b]thiopyran-4-one, 5,6-dihydro-6-methyl-, (S)-; (S)-6-Methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-4-thione (related tautomer/form); Chiral Thienothiopyranone
EINECS	Contact for details

Quality Control

Our (S)-6-Methyl-5,6-Dihydro-4H-Thieno[2,3-B]Thiopyran-4-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis by HPLC, to ensure it meets the high standards required for pharmaceutical research. Certificates of Analysis (COA) with detailed specifications are provided for every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from incompatible materials. For long-term storage, consider inert atmosphere conditions to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Chiral Purity (Chiral HPLC)	≥ 99.0% ee
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.