Description

5-Amino-2-Phenylbenzenesulfonic Acid is a specialized aromatic sulfonic acid derivative that serves as a high-value intermediate in advanced chemical synthesis. Its molecular structure, featuring both an amino and a sulfonic acid group on a biphenyl core, makes it a versatile building block for creating complex molecules with specific functional properties. This compound is primarily utilized by research institutions and industrial manufacturers in the pharmaceutical and specialty chemical sectors for developing active ingredients and functional dyes.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for compounds requiring a biphenyl-sulfonate scaffold.
• Dye and Pigment Manufacturing: Used in the production of specialized azo dyes and pigments, where it contributes to color fastness and solubility properties.
• Agrochemical Synthesis: Serves as a building block for developing advanced herbicides and fungicides with targeted activity.
• Ligand and Chelating Agent Precursor: The amino and sulfonic acid groups allow for the creation of complexing agents used in catalysis and metal ion sequestration.
• Polymer Modification: Employed to introduce sulfonate functionality into polymers, enhancing hydrophilicity and ionic character for specialty resin applications.
• Research & Development: A valuable compound for academic and industrial R&D in organic chemistry, medicinal chemistry, and materials science.

Basic Information

Product Name	5-Amino-2-Phenylbenzenesulfonic Acid
CAS No.	340700-78-9
Molecular Formula	C12H11NO3S
Molecular Weight	249.29 g/mol
Synonyms	2-Amino-5-phenylbenzenesulfonic acid; [1,1'-Biphenyl]-2-sulfonic acid, 5-amino-; 5-Amino[1,1'-biphenyl]-2-sulfonic acid; 2-Phenyl-5-aminobenzenesulfonic acid; 5-Amino-2-phenylbenzene-1-sulfonic acid; 2-Amino-5-phenylphenylsulfonic acid
EINECS	Contact for details

Quality Control

Our 5-Amino-2-Phenylbenzenesulfonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, which includes results from HPLC, NMR, and other relevant spectroscopic methods. Our quality commitment ensures the material meets the stringent requirements for use in pharmaceutical and advanced synthetic applications.

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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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