Description

5-Methyl-Benzo[B]Thiophene-2-Carboxylic Acid Ethyl Ester is a high-purity organic building block and heterocyclic intermediate of significant importance in advanced chemical synthesis. Its core value lies in its role as a versatile precursor for the development of complex molecules, particularly in the pharmaceutical and agrochemical sectors. This compound is essential for researchers and manufacturers engaged in the creation of novel active ingredients, functional materials, and specialty chemicals.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and other therapeutic areas.
• Agrochemical Synthesis: Used in the research and development of new pesticides, herbicides, and fungicides, leveraging the benzo[b]thiophene scaffold.
• Material Science Research: Serves as a precursor for organic semiconductors, liquid crystals, and other functional organic materials due to its conjugated system.
• Chemical Research & Development: Employed in academic and industrial R&D labs for method development, catalysis studies, and the construction of complex heterocyclic libraries.
• Dye and Pigment Intermediate: Acts as a starting material for the synthesis of specialized dyes and organic pigments.

Basic Information

Product Name	5-Methyl-Benzo[B]Thiophene-2-Carboxylic Acid Ethyl Ester
CAS No.	101219-39-0
Molecular Formula	C₁₂H₁₂O₂S
Molecular Weight	220.29 g/mol
Synonyms	Ethyl 5-Methylbenzo[b]thiophene-2-carboxylate; 5-Methylbenzo[b]thiophene-2-carboxylic Acid Ethyl Ester; Ethyl 5-Methyl-1-benzothiophene-2-carboxylate; 5-Methyl-1-benzothiophene-2-carboxylic Acid Ethyl Ester; 2-Carbethoxy-5-methylbenzo[b]thiophene; 101219-39-0; 5-Methylbenzo[b]thiophene-2-carboxylic acid, ethyl ester
EINECS	Contact for details

Quality Control

Our 5-Methyl-Benzo[B]Thiophene-2-Carboxylic Acid Ethyl Ester is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including HPLC, GC, and NMR to verify identity and purity against stringent internal specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance processes.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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