Description

4-Methoxythiophene-2-Carboxylic Acid is a versatile heterocyclic building block and key organic intermediate. This compound is essential for the synthesis of complex molecules due to its reactive carboxylic acid group and electron-rich thiophene core. It is primarily utilized by research institutions and manufacturers in the pharmaceutical, agrochemical, and material science industries for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for candidates with thiophene-based scaffolds.
• Agrochemical Synthesis: Used in the research and development of advanced pesticides, herbicides, and fungicides.
• Material Science Research: Serves as a monomer or building block for creating conductive polymers, organic semiconductors, and specialty polymers.
• Ligand and Catalyst Development: Employed in the preparation of specialized ligands for metal catalysis and coordination chemistry.
• Fine Chemical Production: Acts as a key intermediate for synthesizing dyes, pigments, and other high-value specialty chemicals.
• Academic & R&D: A valuable reagent for methodological studies and exploring new organic reactions in synthetic chemistry.

Basic Information

Product Name	4-Methoxythiophene-2-Carboxylic Acid
CAS No.	77133-27-8
Molecular Formula	C6H6O3S
Molecular Weight	158.18 g/mol
Synonyms	2-Methoxy-4-thiophenecarboxylic Acid; 4-Methoxy-2-thiophenecarboxylic Acid; 2-Carboxy-4-methoxythiophene; 4-Methoxythiophene-2-carboxylic acid; 2-Thiophenecarboxylic acid, 4-methoxy-; 77133-27-8; 4-Methoxy-thiophene-2-carboxylic acid
EINECS	Contact for details

Quality Control

Our 4-Methoxythiophene-2-Carboxylic Acid is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation (IR, NMR), to ensure it meets high-purity standards suitable for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee traceability and consistency.

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). This product is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed and away from direct light to maintain stability and purity.

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%

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