Description

Benzo[B]Thiophene-2-Carboxylic Acid, 4-Amino-, Methyl Ester (9Ci) is a high-purity organic building block and key synthetic intermediate of significant commercial interest. Its value lies in its functionalized thiophene core, which serves as a versatile scaffold for constructing more complex molecules in advanced research and development. This compound is primarily needed by pharmaceutical, agrochemical, and material science industries for applications in drug discovery, specialty chemical synthesis, and the development of novel electronic materials.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for candidates targeting central nervous system (CNS) disorders and other therapeutic areas.
• Agrochemical Research: Used in the development of new generation pesticides and herbicides, where the thiophene moiety can contribute to biological activity.
• Organic Light-Emitting Diodes (OLEDs): Serves as a precursor for electron-transport materials or emissive layer dopants in the fabrication of advanced display and lighting technologies.
• Material Science: Employed in the synthesis of organic semiconductors, conductive polymers, and other functional materials for electronic applications.
• Chemical Research & Development: Acts as a versatile starting material for academic and industrial research into heterocyclic chemistry, medicinal chemistry, and catalysis.
• Dye and Pigment Synthesis: Utilized as an intermediate in the production of specialized dyes and organic pigments.

Basic Information

Product Name	Benzo[B]Thiophene-2-Carboxylic Acid, 4-Amino-, Methyl Ester (9Ci)
CAS No.	330801-72-4
Molecular Formula	C10H9NO2S
Molecular Weight	207.25 g/mol
Synonyms	4-Aminobenzo[b]thiophene-2-carboxylic acid methyl ester; Methyl 4-aminobenzo[b]thiophene-2-carboxylate; 4-Amino-1-benzothiophene-2-carboxylic acid methyl ester; 2-Methoxycarbonyl-4-aminobenzo[b]thiophene; 330801-72-4; Benzo[b]thiophene-2-carboxylic acid, 4-amino-, methyl ester; Methyl 4-amino-1-benzothiophene-2-carboxylate
EINECS	Contact for details

Quality Control

Our Benzo[B]Thiophene-2-Carboxylic Acid, 4-Amino-, Methyl Ester (9Ci) 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 industrial synthesis. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory needs.

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 away from heat, sparks, and open flame. Due to its light-sensitive nature, handling and storage should minimize exposure to direct light.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Area %)
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.