Description

4-Amino-3-Thiophenecarboxylic Acid is a high-purity heterocyclic building block of significant commercial and research interest. This compound serves as a versatile intermediate for synthesizing complex molecules, particularly in the pharmaceutical and agrochemical sectors. It is essential for R&D chemists and production specialists developing active pharmaceutical ingredients (APIs), advanced materials, and specialty fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and anti-infective agents.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and insecticides with specific mode-of-action profiles.
• Material Science Research: Building block for creating functionalized polymers, conductive materials, and organic semiconductors.
• Dye and Pigment Manufacturing: Intermediate for producing specialized thiophene-based colorants and optical brighteners.
• Chemical Research & Development: A valuable scaffold in medicinal chemistry for structure-activity relationship (SAR) studies and library synthesis.
• Ligand Synthesis: Used to prepare complexing agents and catalysts for asymmetric synthesis and metal-organic frameworks (MOFs).

Basic Information

Product Name	4-Amino-3-Thiophenecarboxylic Acid
CAS No.	26112-64-1
Molecular Formula	C5H5NO2S
Molecular Weight	143.16 g/mol
Synonyms	3-Carboxy-4-aminothiophene; 4-Aminothiophene-3-carboxylic Acid; 3-Thiophenecarboxylic acid, 4-amino-; 4-Amino-3-thiophenecarboxylate; 4-Amino-thiophene-3-carboxylic acid; 4-Amino-3-thiophene carboxylic acid; 4-Amino-3-thiophene carboxylic acid
EINECS	Contact for details

Quality Control

Our 4-Amino-3-Thiophenecarboxylic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets exacting standards for research and industrial use. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

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 incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to light yellow 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%
Heavy Metals (as Pb)	≤ 20 ppm

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