Description

3-Methoxy-5-Methyl-2-Thiophenecarboxylic Acid (Saltdata: Free) is a high-purity, functionalized thiophene derivative serving as a critical building block in advanced organic synthesis. Its value lies in providing a versatile carboxylic acid handle on a substituted thiophene scaffold, enabling the construction of complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for developing active ingredients and novel materials.

Application

• Pharmaceutical Intermediate: A key synthon for the development of active pharmaceutical ingredients (APIs), especially in therapeutic areas requiring heterocyclic cores.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, and fungicides where the thiophene moiety imparts specific biological activity.
• Material Science Precursor: Serves as a monomer or functional unit in the synthesis of conductive polymers, organic semiconductors, and other specialty materials.
• Ligand and Catalyst Development: Employed in the creation of novel ligands for metal catalysis and organocatalysts due to its electron-rich aromatic system and modifiable carboxylic acid group.
• Chemical Research & Development: A versatile building block for medicinal chemistry, process chemistry, and discovery chemistry programs in both academic and industrial settings.
• Fine Chemical Production: Integral to the multi-step synthesis of complex fine chemicals and specialty compounds for various high-tech applications.

Basic Information

Item	Detail
Product Name	3-Methoxy-5-Methyl-2-Thiophenecarboxylic Acid (Saltdata: Free)
CAS No.	83261-26-1
Molecular Formula	C7H8O3S
Molecular Weight	172.20 g/mol
Synonyms	2-Thiophenecarboxylic acid, 3-methoxy-5-methyl-; 3-Methoxy-5-methylthiophene-2-carboxylic acid; 5-Methyl-3-methoxy-2-thiophenecarboxylic acid; 3-Methoxy-5-methyl-2-thiophenecarboxylic acid (free acid); 83261-26-1; 3-Methoxy-5-methylthiophene-2-carboxylate; 3-Methoxy-5-methyl-2-thiophenecarboxylate
EINECS	Contact for details

Quality Control

Every batch of 3-Methoxy-5-Methyl-2-Thiophenecarboxylic Acid is produced and tested under a strict quality management system to ensure consistency and reliability for your critical applications. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as purity, identity, and impurity profiles. Our quality commitment aligns with cGMP principles where applicable, ensuring the material meets the stringent requirements of pharmaceutical and advanced chemical synthesis.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Keep away from strong acids and organic solvents. Due to its light-sensitive nature, containers should be kept in secondary packaging or amber glass to minimize light exposure during storage.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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