Description

2,5-Dichloro-3-Methylthiophene CAS NO 17249-90-0 is a halogenated thiophene derivative that serves as a versatile and high-value synthetic intermediate. Its molecular structure makes it a critical building block for constructing complex heterocyclic systems in advanced chemical synthesis. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for developing novel active ingredients.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and anti-infective agents.
• Agrochemical Synthesis: Building block for developing new-generation herbicides, fungicides, and insecticides with enhanced efficacy and selectivity.
• Material Science Research: Used in the development of organic semiconductors, conductive polymers, and nonlinear optical (NLO) materials due to its electron-rich thiophene core.
• Ligand and Catalyst Preparation: Serves as a starting material for synthesizing specialized ligands used in transition metal catalysis and coordination chemistry.
• Fine Chemical Production: Intermediate in the multi-step synthesis of dyes, pigments, and other specialty organic compounds.

Basic Information

Product Name	2,5-Dichloro-3-Methylthiophene
CAS No.	17249-90-0
Molecular Formula	C5H4Cl2S
Molecular Weight	167.06 g/mol
Synonyms	3-Methyl-2,5-dichlorothiophene; 2,5-Dichloro-3-methylthiophene; 2,5-Dichloro-3-methyl-thiophene; Thiophene, 2,5-dichloro-3-methyl-; NSC 172087; 17249-90-0; Dichloromethylthiophene
EINECS	Contact for details

Quality Control

Our 2,5-Dichloro-3-Methylthiophene is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for every shipment, detailing purity, identity, and impurity profiles as verified by GC, HPLC, and NMR. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, and we support regulatory documentation for REACH compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from strong oxidizing agents and bases. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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