Description

3-Amino-4-Fluorobenzenesulfonic Acid is a versatile aromatic sulfonic acid derivative that serves as a critical building block in advanced organic synthesis. Its unique structure, featuring both an amino and a sulfonic acid group on a fluorinated benzene ring, makes it a valuable intermediate for creating complex molecules with specific electronic and steric properties. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical sectors, where it is used to develop active ingredients, dyes, and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfa drugs and other therapeutic agents.
• Agrochemical Synthesis: Used in the production of herbicides, pesticides, and fungicides, leveraging its fluorine and sulfonic acid groups for bioactivity.
• Dye and Pigment Manufacturing: Acts as an intermediate for azo dyes and other colorants, providing improved solubility and color fastness.
• Liquid Crystal & Electronic Materials: Employed in the synthesis of specialty chemicals for display technologies and organic electronics.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new chemical entities and reaction pathways.
• Corrosion Inhibitor Formulation: Used in the development of specialty chemicals for metal surface treatment and protection.

Basic Information

Product Name	3-Amino-4-Fluorobenzenesulfonic Acid
CAS No.	349-64-4
Molecular Formula	C6H6FNO3S
Molecular Weight	191.18 g/mol
Synonyms	4-Fluoro-3-aminobenzenesulfonic Acid; 3-Amino-4-fluorobenzenesulfonate; 4-Fluoro-m-aminobenzenesulfonic Acid; Benzenesulfonic acid, 3-amino-4-fluoro-; 3-Amino-4-fluorophenylsulfonic acid; 4-Fluoro-3-anilinesulfonic Acid; 3-Amino-4-fluoro-1-sulfobenzene
EINECS	Contact for details

Quality Control

Our 3-Amino-4-Fluorobenzenesulfonic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for synthesis and research applications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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