Description

4-Methoxythiophene-3-Carboxylic Acid is a high-value heterocyclic building block and key synthetic intermediate. This compound is essential for researchers and manufacturers requiring precise molecular scaffolds for advanced chemical synthesis. It is primarily utilized in the pharmaceutical, agrochemical, and material science industries for the development of novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial precursor 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-generation pesticides and herbicides, leveraging its unique thiophene core.
• Material Science: Serves as a monomer or functionalizing agent in the production of conductive polymers and advanced organic electronic materials.
• Organic Synthesis Building Block: Employed in cross-coupling reactions, such as Suzuki or Stille couplings, to construct complex heterocyclic systems.
• Chemical Research & Development: A valuable reagent for academic and industrial R&D labs exploring new chemical entities and reaction pathways.
• Ligand and Catalyst Development: Used to create specialized ligands for metal catalysis in asymmetric synthesis.

Basic Information

Product Name	4-Methoxythiophene-3-Carboxylic Acid
CAS No.	71050-40-3
Molecular Formula	C7H8O3S
Molecular Weight	172.20 g/mol
Synonyms	3-Carboxy-4-methoxythiophene; 4-Methoxy-3-thiophenecarboxylic Acid; 4-Methoxythiophene-3-carboxylic acid; 3-Thiophenecarboxylic acid, 4-methoxy-; 4-Methoxy-thiophene-3-carboxylic acid
EINECS	Contact for details

Quality Control

Our 4-Methoxythiophene-3-Carboxylic Acid is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy. We provide a detailed Certificate of Analysis (COA) with every shipment, ensuring traceability and compliance with your research or production specifications. Our quality commitment supports applications requiring high-purity chemical intermediates.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

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	≤ 1.0%
Residue on Ignition	≤ 0.1%

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