Description

Methyl 3-Chloro-5,6-Dimethoxybenzo[B]Thiophene-2-Carboxylate is a high-purity, synthetically valuable heterocyclic building block. This compound is essential for advanced organic synthesis, particularly in the development of novel active pharmaceutical ingredients (APIs) and functional materials. It is primarily sought by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for its role as a key intermediate in complex molecular architectures.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and other therapeutic areas.
• Agrochemical Research: Used as a building block for developing new-generation herbicides, fungicides, and insecticides with enhanced efficacy.
• Material Science: Serves as a monomer or precursor for creating specialty polymers and organic electronic materials due to its fused thiophene core.
• Chemical Synthesis: Employed in academic and industrial R&D for constructing complex benzo[b]thiophene derivatives and exploring new chemical spaces.
• Dye & Pigment Intermediate: Utilized in the synthesis of advanced colorants and functional dyes.

Basic Information

Product Name	Methyl 3-Chloro-5,6-Dimethoxybenzo[B]Thiophene-2-Carboxylate
CAS No.	71797-90-5
Molecular Formula	C12H11ClO4S
Molecular Weight	286.73 g/mol
Synonyms	3-Chloro-5,6-dimethoxybenzo[b]thiophene-2-carboxylic acid methyl ester; Methyl 3-chloro-5,6-dimethoxy-1-benzothiophene-2-carboxylate; 2-Methoxycarbonyl-3-chloro-5,6-dimethoxybenzo[b]thiophene; 71797-90-5; Benzo[b]thiophene-2-carboxylic acid, 3-chloro-5,6-dimethoxy-, methyl ester
EINECS	Contact for details

Quality Control

Our Methyl 3-Chloro-5,6-Dimethoxybenzo[B]Thiophene-2-Carboxylate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and GC-MS, 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, well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents and bases. For long-term storage, consider an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference standard
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
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.