Description

5-Methoxy-3-Methyl-1-Benzothiophene-2-Carboxylic Acid is a high-purity, functionalized benzothiophene derivative serving as a critical synthetic intermediate. This compound matters for its role in constructing complex molecular architectures, particularly in advanced pharmaceutical and agrochemical research. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for synthesizing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, particularly in therapeutic areas targeting central nervous system (CNS) disorders and oncology.
• Agrochemical Synthesis: Used in the research and development of new-generation herbicides, fungicides, and plant growth regulators.
• Material Science Precursor: Serves as a monomer or functional unit in the development of organic semiconductors, conductive polymers, and advanced organic electronic materials.
• Chemical Research & Development: Essential reagent in academic and industrial labs for methodological studies, heterocyclic chemistry, and the exploration of new chemical reactions.
• Fine Chemical Production: Intermediate in the multi-step synthesis of complex, high-value specialty chemicals and dyes.

Basic Information

Product Name	5-Methoxy-3-Methyl-1-Benzothiophene-2-Carboxylic Acid
CAS No.	21243-02-7
Molecular Formula	C11H10O3S
Molecular Weight	222.26 g/mol
Synonyms	2-Carboxy-5-methoxy-3-methylbenzothiophene; 5-Methoxy-3-methylbenzo[b]thiophene-2-carboxylic acid; 3-Methyl-5-methoxy-1-benzothiophene-2-carboxylic acid; 5-Methoxy-3-methyl-1-benzothiophene-2-carboxylic acid; 21243-02-7; 5-Methoxy-3-methylbenzothiophene-2-carboxylic acid
EINECS	Contact for details

Quality Control

Our 5-Methoxy-3-Methyl-1-Benzothiophene-2-Carboxylic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for research and production. Certificates of Analysis (COA) detailing all specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong acids and incompatible materials. For long-term storage, consider under an inert atmosphere to maintain optimal 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.