Description

3-Methoxy-5-Nitrobenzo[B]Thiophene-3-Carboxylic Acid is a high-purity, specialized heterocyclic building block of significant interest in advanced organic synthesis. Its unique molecular architecture, featuring both electron-donating (methoxy) and electron-withdrawing (nitro, carboxylic acid) groups on a benzo[b]thiophene scaffold, makes it a versatile intermediate for constructing complex molecules. This compound is primarily utilized by R&D chemists and process development scientists in the pharmaceutical and agrochemical industries for the development of novel active ingredients.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new drug candidates, particularly for molecules targeting various therapeutic areas.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, leveraging its heterocyclic structure for biological activity.
• Material Science Research: Serves as a precursor for the synthesis of organic semiconductors, dyes, and functional polymers due to its conjugated system.
• Chemical Research & Development: Employed as a model compound or building block in methodological studies and the synthesis of complex heterocyclic libraries.
• Ligand and Catalyst Development: The carboxylic acid functionality allows for derivatization into chelating agents or specialized ligands for catalytic systems.

Basic Information

Product Name	3-Methoxy-5-Nitrobenzo[B]Thiophene-3-Carboxylic Acid
CAS No.	26759-54-6
Molecular Formula	C10H7NO5S
Molecular Weight	253.23 g/mol
Synonyms	3-Methoxy-5-nitrobenzo[b]thiophene-2-carboxylic acid; 5-Nitro-3-methoxybenzo[b]thiophene-2-carboxylic acid; 2-Carboxy-3-methoxy-5-nitrobenzo[b]thiophene; Benzo[b]thiophene-2-carboxylic acid, 3-methoxy-5-nitro-; 3-Methoxy-5-nitro-1-benzothiophene-2-carboxylic acid
EINECS	Contact for details

Quality Control

Every batch of 3-Methoxy-5-Nitrobenzo[B]Thiophene-3-Carboxylic Acid is manufactured and tested under a strict quality management system. Our products undergo rigorous quality testing, including HPLC for purity and identity confirmation (IR, NMR), to ensure compliance with exacting R&D and process chemistry standards. A comprehensive Certificate of Analysis (COA) detailing all specifications and test results is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (typically 15-25°C). Keep the container tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
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.