Description

3-Amino-5-Benzamido-4-Hydroxybenzenesulphonic Acid is a specialized aromatic sulfonic acid derivative that serves as a critical high-purity intermediate in advanced chemical synthesis. Its unique molecular structure, featuring both amino and benzamido functional groups, makes it a valuable building block for creating complex, functional molecules. This compound is essential for manufacturers in the pharmaceutical and specialty dye industries who require reliable, high-quality intermediates for research and production.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a sulfonated aromatic core.
• Specialty Dye & Pigment Synthesis: Used in the manufacture of high-performance, sulfonated azo dyes and pigments, contributing to color fastness and solubility.
• Liquid Crystal & OLED Material Production: Serves as a building block for creating charge-transport or emissive layers in advanced electronic displays.
• Agrochemical Synthesis: Employed in the development of modern herbicides and fungicides where the sulfonic acid group enhances bioavailability or systemic activity.
• Research & Development: A valuable reagent for academic and industrial R&D in organic chemistry and medicinal chemistry for constructing novel molecular architectures.
• Polymer Modification: Can be used to introduce sulfonic acid groups into polymers, potentially for ion-exchange resins or proton-conducting membranes.

Basic Information

Item	Details
Product Name	3-Amino-5-Benzamido-4-Hydroxybenzenesulphonic Acid
CAS No.	85237-59-8
Molecular Formula	C₁₃H₁₂N₂O₅S
Molecular Weight	308.31 g/mol
Synonyms	5-Benzamido-2-hydroxy-3-aminobenzenesulfonic Acid; 3-Amino-5-benzoylamino-4-hydroxybenzenesulfonic Acid; Benzenesulfonic acid, 3-amino-5-(benzoylamino)-4-hydroxy-; 3-Amino-4-hydroxy-5-benzamidobenzenesulfonic Acid; 4-Hydroxy-3-amino-5-benzamidobenzenesulfonic Acid; 3-Amino-5-(phenylcarbonylamino)-4-hydroxybenzenesulfonic Acid; ABHBSA (abbreviation)
EINECS	Contact for details

Quality Control

Our 3-Amino-5-Benzamido-4-Hydroxybenzenesulphonic Acid is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment, guaranteeing traceability and compliance with your quality protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong acids and organic solvents. The container must be kept tightly sealed to protect from moisture.

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 (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 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.