Description

Benzo[B]Thiophene-2-Carboxylic Acid, 4-Methoxy-, Ethyl Ester is a high-purity organic building block and synthetic intermediate of significant value in advanced chemical synthesis. This compound is essential for research and development in the pharmaceutical and agrochemical sectors, where precise molecular architecture is critical. It is primarily sought after by fine chemical manufacturers and R&D laboratories for constructing complex heterocyclic molecules.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those with benzothiophene cores for therapeutic applications.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and pesticides, leveraging its heterocyclic structure for bioactivity.
• Material Science Precursor: Serves as a monomer or precursor in the development of organic electronic materials, such as semiconductors and light-emitting materials.
• Dye and Pigment Synthesis: Intermediate for creating specialized dyes and pigments with specific light-absorption properties.
• Ligand Synthesis for Catalysis: Used to prepare complex ligands for transition metal catalysts in asymmetric synthesis.
• Academic and Industrial R&D: A valuable reagent for methodological studies and exploratory chemistry in both university and corporate research settings.

Basic Information

Product Name	Benzo[B]Thiophene-2-Carboxylic Acid, 4-Methoxy-, Ethyl Ester
CAS No.	187753-63-5
Molecular Formula	C₁₂H₁₂O₃S
Molecular Weight	236.29 g/mol
Synonyms	4-Methoxybenzo[b]thiophene-2-carboxylic acid ethyl ester; Ethyl 4-methoxybenzo[b]thiophene-2-carboxylate; 4-Methoxy-1-benzothiophene-2-carboxylic Acid Ethyl Ester; 2-Carbethoxy-4-methoxybenzo[b]thiophene; 4-Methoxybenzothiophene-2-carboxylic acid ethyl ester; 187753-63-5; Ethyl 4-methoxy-1-benzothiophene-2-carboxylate
EINECS	Contact for details

Quality Control

Our Benzo[B]Thiophene-2-Carboxylic Acid, 4-Methoxy-, Ethyl Ester is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure high purity and batch-to-batch consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting identity, purity, and impurity profiles 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 acids and organic solvents. The container should be kept tightly sealed to prevent contamination and moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (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.