Description

Benzo[B]Thiophene-4-Carboxylic Acid, 2-Amino-3-Cyano-4,5,6,7-Tetrahydro-4-Methyl-, (4S)- is a high-value, stereochemically defined advanced pharmaceutical intermediate. This compound is critical for the synthesis of complex molecules, offering a precise chiral scaffold for medicinal chemistry research and development. It is primarily utilized by R&D chemists and process development scientists in the pharmaceutical and agrochemical industries seeking to build novel, biologically active heterocyclic compounds.

Application

• Pharmaceutical Intermediate: Serves as a key chiral building block for the synthesis of potential drug candidates, particularly in central nervous system (CNS) and oncology research.
• Medicinal Chemistry Research: Used in structure-activity relationship (SAR) studies and lead optimization due to its fused thiophene-carboxylic acid structure with multiple functional handles.
• Agrochemical Synthesis: Acts as a precursor for developing novel herbicides or fungicides with specific modes of action.
• Chemical Biology Probes: Utilized in the development of chemical probes to study enzyme function or protein-protein interactions.
• Process Chemistry Development: Employed in scaling up synthetic routes for active pharmaceutical ingredients (APIs) requiring this specific stereochemistry.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for client-specific synthesis projects.

Basic Information

Product Name	Benzo[B]Thiophene-4-Carboxylic Acid, 2-Amino-3-Cyano-4,5,6,7-Tetrahydro-4-Methyl-, (4S)-
CAS No.	2749963-99-1
Molecular Formula	C12H14N2O2S
Molecular Weight	250.32 g/mol
Synonyms	(4S)-2-Amino-3-cyano-4-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-4-carboxylic acid; (4S)-4-Methyl-2-amino-3-cyano-4,5,6,7-tetrahydrobenzo[b]thiophene-4-carboxylic acid; 2-Amino-3-cyano-4-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-4-carboxylic acid (S-enantiomer); (S)-4-Methyl-ATCT; Tetrahydrobenzothiophene carboxylic acid derivative; BTT-4CA; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our Benzo[B]Thiophene-4-Carboxylic Acid, 2-Amino-3-Cyano-4,5,6,7-Tetrahydro-4-Methyl-, (4S)- is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral HPLC to ensure enantiomeric purity and identity confirmation. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing purity, assay, and impurity profiles to support your regulatory and R&D documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive); therefore, the container must be kept tightly sealed in a dry environment to prevent degradation. For long-term storage, consider using desiccants.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Enantiomeric Purity (Chiral HPLC)	≥ 99.0% ee
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 1.5%

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