Description

4H-Cyclopenta[B]Thiophene-2-Carbonyl Chloride, 5,6-Dihydro- (9Ci) is a high-value, reactive organic intermediate featuring a fused cyclopentathiophene core. This compound matters as a critical building block for synthesizing complex heterocyclic molecules, enabling advanced research and development in specialized chemistry. It is primarily needed by pharmaceutical R&D teams and fine chemical manufacturers for creating novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of novel drug candidates, particularly those targeting central nervous system (CNS) disorders.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides with specific biological activity.
• Material Science Research: Serves as a precursor for organic semiconductors, conductive polymers, and other electronic materials due to its thiophene-based structure.
• Ligand and Catalyst Development: Employed in the creation of specialized ligands for metal-organic catalysis and asymmetric synthesis.
• Dye and Pigment Chemistry: Acts as a building block for synthesizing novel heterocyclic dyes with specific optical properties.
• Academic and Industrial R&D: Essential for exploratory chemistry in universities and corporate labs focusing on heterocyclic compound libraries.

Basic Information

Product Name	4H-Cyclopenta[B]Thiophene-2-Carbonyl Chloride, 5,6-Dihydro- (9Ci)
CAS No.	142329-25-7
Molecular Formula	C8H7ClOS
Molecular Weight	186.66 g/mol
Synonyms	5,6-Dihydro-4H-cyclopenta[b]thiophene-2-carbonyl chloride; 4H-Cyclopenta[b]thiophene-2-carbonyl chloride, 5,6-dihydro-; 5,6-Dihydro-4H-cyclopenta[b]thiophene-2-carboxylic acid chloride; Cyclopenta[b]thiophene-2-carbonyl chloride, 5,6-dihydro-4H-; 142329-25-7
EINECS	Contact for details

Quality Control

Our production of 4H-Cyclopenta[B]Thiophene-2-Carbonyl Chloride, 5,6-Dihydro- (9Ci) adheres to stringent internal quality standards to ensure batch-to-batch consistency and high purity for research and synthesis. Each lot is characterized by modern analytical techniques including NMR, HPLC, and GC. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry place. Recommended storage temperature is 2-8°C for long-term stability. Keep away from moisture, strong bases, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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