Description

2-Thiophenecarbonylchloride,5-Chloro-3-Methyl-(9Ci) is a specialized heterocyclic building block and acid chloride derivative. This compound is a critical intermediate in the synthesis of complex molecules, particularly in the pharmaceutical and agrochemical sectors, where it enables the introduction of functionalized thiophene moieties. It is primarily sought by research chemists and process development scientists working on active pharmaceutical ingredients (APIs), crop protection agents, and advanced material precursors.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, especially those targeting central nervous system (CNS) disorders and anti-infective agents.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides that incorporate the thiophene scaffold for enhanced bioactivity.
• Material Science Research: Serves as a monomer or precursor for developing conductive polymers, organic semiconductors, and non-linear optical (NLO) materials.
• Chemical Research & Development: An essential reagent for method development and creating custom chemical libraries for high-throughput screening in drug discovery.
• Ligand and Catalyst Preparation: Used to synthesize complex ligands for metal catalysis and organocatalysts.

Basic Information

Product Name	2-Thiophenecarbonylchloride,5-Chloro-3-Methyl-(9Ci)
CAS No.	91505-30-5
Molecular Formula	C7H4Cl2OS
Molecular Weight	207.08 g/mol
Synonyms	5-Chloro-3-methyl-2-thiophenecarbonyl chloride; 5-Chloro-3-methylthiophene-2-carbonyl chloride; 2-Thenoyl chloride, 5-chloro-3-methyl-; 5-Chloro-3-methyl-2-thenoyl chloride; 3-Methyl-5-chlorothiophene-2-carbonyl chloride; 5-Chloro-3-methylthiophene-2-carboxylic acid chloride; 91505-30-5; 5-Chloro-3-methyl-2-thiophenecarboxylic acid chloride
EINECS	Contact for details

Quality Control

Our production of 2-Thiophenecarbonylchloride,5-Chloro-3-Methyl-(9Ci) adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for sensitive synthetic applications. Each lot is analyzed using advanced techniques including HPLC, GC, and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory documentation.

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). This material is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) to prevent decomposition. Keep away from strong bases, oxidizing agents, and sources of ignition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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