Description

3-Amino-4-Chloro-Benzenesulfonic Acid 4-Amino-Phenyl Ester is a specialized aromatic sulfonic acid ester derivative, serving as a high-value intermediate in advanced organic synthesis. Its bifunctional structure, featuring both amino and sulfonate ester groups, makes it a critical building block for creating complex molecules with tailored properties. This compound is essential for R&D and production chemists in the pharmaceutical, agrochemical, and specialty dye industries seeking to develop new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly for sulfonamide-based therapeutics and targeted agents.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and plant growth regulators requiring specific sulfonate ester functionalities.
• Dye and Pigment Manufacturing: Acts as a coupling agent and intermediate for producing azo dyes and high-performance pigments with enhanced color fastness and solubility.
• Polymer Modification: Serves as a functional monomer or cross-linking agent for engineering polymers, ion-exchange resins, and specialty coatings.
• Chemical Research (R&D): A valuable reagent in academic and industrial laboratories for exploring new synthetic pathways and material science applications.
• Liquid Crystal & Electronic Materials: Potential building block for synthesizing components used in display technologies and organic semiconductors.

Basic Information

Product Name	3-Amino-4-Chloro-Benzenesulfonic Acid 4-Amino-Phenyl Ester
CAS No.	64910-68-5
Molecular Formula	C12H11ClN2O3S
Molecular Weight	298.75 g/mol
Synonyms	4-Aminophenyl 3-Amino-4-chlorobenzenesulfonate; 3-Amino-4-chlorobenzenesulfonic acid 4-aminophenyl ester; Benzenesulfonic acid, 3-amino-4-chloro-, 4-aminophenyl ester; 4-Aminophenyl 3-amino-4-chlorobenzenesulfonate; (4-Aminophenyl) 3-amino-4-chlorobenzenesulfonate
EINECS	Contact for details

Quality Control

Our 3-Amino-4-Chloro-Benzenesulfonic Acid 4-Amino-Phenyl Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing all 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 area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to minimize exposure to atmospheric humidity. Keep away from incompatible materials.

Specification

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

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