Description

7-[(4-Aminobenzoyl)Amino]-3-Hydroxynaphthalene-1-Sulphonic Acid is a specialized aromatic sulfonic acid derivative that serves as a critical high-purity intermediate in advanced chemical synthesis. Its molecular structure, featuring both an amino-benzoyl and a hydroxynaphthalene-sulfonic acid group, makes it a valuable building block for creating compounds with specific functional properties. This product is essential for manufacturers in the pharmaceutical and specialty dye industries who require consistent, high-quality intermediates for research and production.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a naphthalene-sulfonic acid backbone.
• Specialty Dye & Pigment Synthesis: Used in the manufacture of high-performance azo dyes and pigments, contributing to color fastness and molecular stability.
• Biochemical Research: Serves as a building block or derivatization agent in proteomics and enzyme inhibitor studies.
• Liquid Crystal & OLED Material Development: Acts as an intermediate for creating advanced organic electronic materials due to its conjugated aromatic system.
• Complexing Agent Precursor: Utilized in the production of ligands and chelating agents for metal ion sequestration.
• Analytical Reagent: Employed in the development of chromogenic and fluorogenic reagents for detection assays.

Basic Information

Product Name	7-[(4-Aminobenzoyl)Amino]-3-Hydroxynaphthalene-1-Sulphonic Acid
CAS No.	68227-71-4
Molecular Formula	C₁₇H₁₄N₂O₅S
Molecular Weight	358.37 g/mol
Synonyms	7-[(4-Aminobenzoyl)amino]-3-hydroxy-1-naphthalenesulfonic acid; 3-Hydroxy-7-[(4-aminobenzoyl)amino]naphthalene-1-sulfonic acid; 1-Naphthalenesulfonic acid, 7-[(4-aminobenzoyl)amino]-3-hydroxy-; Benzoic acid, 4-amino-, 2-(7-sulfo-3-hydroxy-1-naphthalenyl)hydrazide; C.I. 37515; Acid Orange 33 intermediate; Azoic Coupling Component 13 intermediate
EINECS	Contact for details

Quality Control

Our 7-[(4-Aminobenzoyl)Amino]-3-Hydroxynaphthalene-1-Sulphonic Acid is manufactured 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. Certificates of Analysis (COA) detailing purity, impurity profile, and physical characteristics are provided and available upon request, supporting compliance in regulated applications.

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). The product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	Yellow to brownish powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
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.