Description

5-Methylthiophene-3-Carboxylic Acid is a high-purity heterocyclic building block essential for advanced organic synthesis. This compound serves as a versatile intermediate for constructing complex molecular architectures, particularly in the development of active pharmaceutical ingredients (APIs) and functional materials. It is critically needed by research institutions and manufacturers in the pharmaceutical, agrochemical, and material science industries for creating novel compounds with targeted properties.

Application

• Pharmaceutical Intermediate: Key synthon for the development of novel drug candidates, particularly in central nervous system (CNS) and anti-inflammatory therapeutic areas.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides, leveraging the thiophene moiety for bioactivity.
• Material Science Precursor: Serves as a monomer or functionalizing agent in the synthesis of conductive polymers, organic semiconductors, and liquid crystals.
• Chemical Research: A valuable building block in medicinal chemistry and process development for creating diverse heterocyclic libraries.
• Coordination Chemistry: Can act as a ligand for metal complexes in catalytic applications or material design.

Basic Information

Product Name	5-Methylthiophene-3-Carboxylic Acid
CAS No.	19156-50-4
Molecular Formula	C7H8O2S
Molecular Weight	156.20 g/mol
Synonyms	3-Carboxy-5-methylthiophene; 5-Methyl-3-thiophenecarboxylic acid; 5-Methylthiophene-3-carboxylic acid; 3-Thiophenecarboxylic acid, 5-methyl-; 5-Methyl-3-thiophenecarboxylic acid; 5-Methyl-thiophene-3-carboxylic acid; 5-Methyl-3-carboxythiophene
EINECS	Contact for details

Quality Control

Our 5-Methylthiophene-3-Carboxylic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, confirming compliance with agreed specifications. Our quality commitment supports applications requiring high-purity intermediates under cGMP or ISO 9001 frameworks.

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 oxidizing agents and bases. The container should be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

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