Description

5-Methoxythiophene-2-Carboxylic Acid is a versatile heterocyclic building block of significant importance in advanced organic synthesis. Its value lies in its bifunctional structure, featuring both a carboxylic acid group and a methoxy-substituted thiophene ring, enabling its use in the construction of complex molecules. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical and agrochemical industries for developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and anti-inflammatory applications.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, leveraging the thiophene scaffold for bioactivity.
• Material Science: Serves as a monomer or building block for conducting polymers, organic semiconductors, and advanced electronic materials due to the thiophene core.
• Ligand and Catalyst Development: The carboxylic acid functionality allows it to be used in creating complex ligands for metal-organic frameworks (MOFs) and asymmetric catalysis.
• Dye and Pigment Intermediate: Employed in the synthesis of specialized dyes and organic pigments where the thiophene ring contributes to color and stability properties.
• Custom Synthesis and R&D: A valuable starting material for contract research organizations (CROs) and fine chemical companies engaged in custom synthesis projects.

Basic Information

Product Name	5-Methoxythiophene-2-Carboxylic Acid
CAS No.	29212-22-4
Molecular Formula	C7H8O3S
Molecular Weight	172.20 g/mol
Synonyms	2-Methoxy-5-thiophenecarboxylic Acid; 5-Methoxy-2-thiophenecarboxylic Acid; 2-Thiophenecarboxylic acid, 5-methoxy-; 5-Methoxythiophene-2-carboxylic acid; 2-Carboxy-5-methoxythiophene; 5-Methoxy-2-thiophene carboxylic acid; 5-Methoxythiophene-2-carboxylate
EINECS	Contact for details

Quality Control

Our 5-Methoxythiophene-2-Carboxylic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and can be tailored to meet specific customer or regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong acids and organic solvents. The container must be kept tightly closed to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	140 - 144 °C
Loss on Drying	≤ 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.