Description

5-Methyl-Thiophene-2-Carbonyl Chloride is a high-purity, reactive organic intermediate essential for constructing complex molecular architectures. Its primary value lies in its role as a versatile acylating agent, enabling the efficient synthesis of amides, esters, and ketones for advanced research and manufacturing. This compound is critically needed by pharmaceutical, agrochemical, and material science industries for the development of active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly in heterocyclic chemistry.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides that require the thiophene moiety for bioactivity.
• Polymer & Material Science: Serves as a monomer or cross-linking agent for creating specialty polymers with unique electronic or thermal properties.
• Ligand & Catalyst Development: Employed in organometallic chemistry to synthesize novel ligands for catalytic systems.
• Dye & Pigment Manufacturing: Acts as a precursor for the synthesis of organic dyes and pigments with specific colorfastness and stability.
• Custom Synthesis & R&D: A crucial reagent for contract research organizations and academic laboratories exploring new chemical entities.

Basic Information

Product Name	5-Methyl-Thiophene-2-Carbonyl Chloride
CAS No.	31555-59-6
Molecular Formula	C7H5ClOS
Molecular Weight	172.63 g/mol
Synonyms	2-Thenoyl chloride, 5-methyl-; 5-Methyl-2-thiophenecarbonyl chloride; 5-Methylthiophene-2-carboxylic acid chloride; 5-Methyl-2-thienoyl chloride; 2-Carbonyl chloride-5-methylthiophene; 5-Methyl-2-thiophenecarboxylic acid chloride; 5-Methylthiophene-2-carbonyl chloride; 5-Methyl-2-thiophenecarbonyl chloride
EINECS	Contact for details

Quality Control

Our 5-Methyl-Thiophene-2-Carbonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from heat, open flames, and incompatible materials such as strong bases, alcohols, and amines.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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