Description

4H-Cyclopenta[B]Thiophene-6-Carboxylicacid,5,6-Dihydro-5,5-Dimethyl-(9Ci) is a high-purity, advanced pharmaceutical intermediate with a complex fused-ring structure. This compound is valued for its role as a critical building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring sophisticated molecular scaffolds. It is primarily sought by R&D and production teams in the pharmaceutical, agrochemical, and specialty chemical industries for developing new drug candidates and high-value fine chemicals.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel drug candidates, especially those targeting central nervous system (CNS) disorders, inflammatory diseases, and oncology.
• Agrochemical Research: Used in the development of new-generation pesticides and herbicides, leveraging its unique heterocyclic structure for biological activity.
• Material Science: Acts as a monomer or building block for creating specialized polymers and organic electronic materials with specific optoelectronic properties.
• Organic Synthesis & Catalysis: Employed in academic and industrial research as a challenging substrate for developing new synthetic methodologies and catalytic reactions.
• Ligand Synthesis: Useful for constructing complex ligands used in coordination chemistry and homogeneous catalysis.

Basic Information

Item	Details
Product Name	4H-Cyclopenta[B]Thiophene-6-Carboxylicacid,5,6-Dihydro-5,5-Dimethyl-(9Ci)
CAS No.	690656-63-4
Molecular Formula	C10H12O2S
Molecular Weight	196.27 g/mol
Synonyms	5,6-Dihydro-5,5-dimethyl-4H-cyclopenta[b]thiophene-6-carboxylic acid; 4H-Cyclopenta[b]thiophene-6-carboxylic acid, 5,6-dihydro-5,5-dimethyl-; 690656-63-4; 5,5-Dimethyl-5,6-dihydro-4H-cyclopenta[b]thiophene-6-carboxylic acid
EINECS	Contact for details

Quality Control

Our production of 4H-Cyclopenta[B]Thiophene-6-Carboxylicacid,5,6-Dihydro-5,5-Dimethyl-(9Ci) adheres to stringent quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and MS, to ensure high purity and consistent chemical identity. Certificates of Analysis (COA) detailing purity, impurities, and full spectroscopic data are provided with every shipment. We support cGMP compliance for pharmaceutical applications and can tailor specifications to meet specific project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). The compound may be sensitive to prolonged exposure to moisture and air; for long-term storage, consider under an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Residual Solvents (GC)	Meets ICH guidelines
Water Content (KF)	≤ 0.5%

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