Description

4,5-Dimethylthiophene-3-Carbonyl Chloride is a high-purity, reactive organosulfur building block of significant interest in advanced organic synthesis. Its value lies in its role as a versatile acylating agent, enabling the efficient introduction of the 4,5-dimethylthiophene-3-carbonyl moiety into target molecules. This compound is essential for researchers and process chemists in the pharmaceutical, agrochemical, and materials science industries, particularly for the development of novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, especially in medicinal chemistry programs targeting various therapeutic areas.
• Agrochemical Synthesis: Used in the research and development of new pesticides, herbicides, and fungicides that incorporate thiophene-based structures for enhanced activity.
• Material Science & Organic Electronics: Serves as a precursor for monomers and functional molecules used in conductive polymers, organic semiconductors, and other advanced materials.
• Ligand & Catalyst Development: Employed in the creation of specialized ligands for catalysis and metal-organic frameworks (MOFs).
• Chemical Research & Development: A fundamental reagent for academic and industrial R&D exploring new heterocyclic chemistry and reaction methodologies.
• Fine Chemical Production: Used in the multi-step synthesis of complex, high-value specialty chemicals and dyes.

Basic Information

Product Name	4,5-Dimethylthiophene-3-Carbonyl Chloride
CAS No.	1160248-80-5
Molecular Formula	C7H7ClOS
Molecular Weight	174.65 g/mol
Synonyms	3-Thenoyl chloride, 4,5-dimethyl-; 4,5-Dimethyl-3-thiophenecarbonyl chloride; 4,5-Dimethylthiophene-3-carboxylic acid chloride; 4,5-Dimethyl-3-thienoyl chloride; 3-Carboxy-4,5-dimethylthiophene chloride; 1160248-80-5; 4,5-Dimethyl-thiophene-3-carbonyl chloride
EINECS	Contact for details

Quality Control

Our 4,5-Dimethylthiophene-3-Carbonyl Chloride is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity suitable for research and scale-up. Each lot undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its hygroscopic and reactive acid chloride nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and decomposition. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Light yellow to brown liquid or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95% (Typical 97-99%)
Water Content (KF)	≤ 0.5%

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