Description

4-Methoxy-Benzo[B]Thiophene-2-Carboxylic Acid is a high-purity, functionalized benzothiophene derivative serving as a critical building block in advanced organic synthesis. Its value lies in its versatile carboxylic acid and methoxy-substituted heterocyclic structure, enabling precise molecular construction for complex target molecules. This intermediate is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly in the development of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, especially those targeting central nervous system (CNS) disorders and metabolic diseases.
• Agrochemical Synthesis: Building block for developing new-generation herbicides, fungicides, and plant growth regulators with enhanced efficacy.
• Material Science Research: Used in the development of organic semiconductors, conductive polymers, and advanced organic electronic materials.
• Ligand and Catalyst Development: Serves as a scaffold for creating specialized ligands in asymmetric catalysis and metal-organic frameworks (MOFs).
• Fluorescent Probe and Dye Synthesis: Core structure for synthesizing specialized dyes and molecular probes used in bio-imaging and diagnostics.
• Custom Chemical Synthesis: Employed by contract research and manufacturing organizations (CROs/CMOs) for bespoke synthesis projects and scale-up.

Basic Information

Product Name	4-Methoxy-Benzo[B]Thiophene-2-Carboxylic Acid
CAS No.	476199-14-1
Molecular Formula	C10H8O3S
Molecular Weight	208.23 g/mol
Synonyms	4-Methoxybenzo[b]thiophene-2-carboxylic acid; 4-Methoxy-1-benzothiophene-2-carboxylic Acid; 2-Carboxy-4-methoxybenzo[b]thiophene; 4-Methoxy-2-thianaphthenecarboxylic Acid; 4-Methoxybenzo[b]thien-2-carboxylic acid; 4-Methoxybenzothiophene-2-carboxylic acid; 476199-14-1; 4-Methoxy-1-benzothiophene-2-carboxylate
EINECS	Contact for details

Quality Control

Our 4-Methoxy-Benzo[B]Thiophene-2-Carboxylic Acid is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to meet rigorous customer specifications. A Certificate of Analysis (COA) detailing identity, purity, and related substances is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%
Residual Solvents (GC)	Complies with ICH Q3C guidelines

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