Description

2-Amino-5-(4-Amino-3-Carboxy-Phenyl)Sulfonyl-Benzoic Acid is a high-purity, multifunctional sulfonated aromatic diamine diacid building block essential for advanced organic synthesis. Its dual amino and carboxylic acid functionalities make it a critical intermediate for creating complex molecules with tailored properties. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical and specialty chemical sectors for developing active pharmaceutical ingredients (APIs), high-performance polymers, and advanced dyes.

Application

• Pharmaceutical Intermediate: A key building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly in sulfonamide-based drug discovery programs.
• Polymer Chemistry: Serves as a monomer for the production of high-performance polyamides, polyimides, and aramids, imparting thermal stability and mechanical strength.
• Dye and Pigment Synthesis: Used in the manufacture of advanced azo dyes and organic pigments, where its sulfonyl and amino groups contribute to color fastness and molecular complexity.
• Ligand and Chelating Agent: Functions as a precursor for creating specialized ligands used in catalysis and metal ion sequestration processes.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic pathways and material science applications.
• Cross-linking Agent: Utilized in the formulation of epoxy resins and other thermosetting polymers to enhance network density and chemical resistance.

Basic Information

Product Name	2-Amino-5-(4-Amino-3-Carboxy-Phenyl)Sulfonyl-Benzoic Acid
CAS No.	6338-59-6
Molecular Formula	C14H12N2O6S
Molecular Weight	336.32 g/mol
Synonyms	4,4'-Diamino-2,2'-disulfobiphenyl-5,5'-dicarboxylic Acid; 2,2'-Disulfo-4,4'-diaminobiphenyl-5,5'-dicarboxylic Acid; 5,5'-Dicarboxy-2,2'-disulfo-4,4'-diaminobiphenyl; Benzoic acid, 2-amino-5-[(4-amino-3-carboxyphenyl)sulfonyl]-; Biphenyl-4,4'-diamine-2,2'-disulfonic acid-5,5'-dicarboxylic acid
EINECS	Contact for details

Quality Control

Our 2-Amino-5-(4-Amino-3-Carboxy-Phenyl)Sulfonyl-Benzoic Acid is manufactured 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 pharmaceutical and advanced material synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with every shipment.

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 under dry, inert conditions to prevent degradation and maintain product integrity.

Specification

Item	Specification
Appearance	Off-white to light yellow 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
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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