Description

7-Amino-4-[[(p-Tolyl)Sulphonyl]Oxy]Naphthalene-2-Sulphonic Acid is a specialized naphthalene-based intermediate featuring both amino and sulphonic acid functional groups, activated by a tosylate (p-tolylsulphonyl) leaving group. This unique structure makes it a versatile and reactive building block for synthesizing complex organic molecules, particularly dyes and pigments. It is primarily sought by fine chemical manufacturers and R&D laboratories in the production of high-value colorants and advanced materials.

Application

• Key Intermediate for Dyes and Pigments: Serves as a crucial precursor in the synthesis of acid dyes, reactive dyes, and solvent dyes, contributing to color strength and fastness properties.
• Functional Material Synthesis: Used in the development of optical brighteners, fluorescent whitening agents, and other specialty chemicals for the paper and textile industries.
• Pharmaceutical Intermediate: Potential building block for the research and development of pharmacologically active compounds containing naphthalene scaffolds.
• Research & Development: Employed in academic and industrial R&D for exploring new organic reactions and creating novel sulfonated compounds.
• Agrochemical Synthesis: Can be utilized as an intermediate in the production of certain herbicides and plant growth regulators.

Basic Information

Product Name	7-Amino-4-[[(p-Tolyl)Sulphonyl]Oxy]Naphthalene-2-Sulphonic Acid
CAS No.	68003-33-8
Molecular Formula	C₁₇H₁₅NO₆S₂
Molecular Weight	393.43 g/mol
Synonyms	7-Amino-4-[(4-methylphenyl)sulfonyl]oxy]naphthalene-2-sulfonic acid; 4-[(Tosyl)oxy]-7-amino-2-naphthalenesulfonic acid; 7-Amino-4-(p-toluenesulfonyloxy)-2-naphthalenesulfonic acid; 2-Naphthalenesulfonic acid, 7-amino-4-[(4-methylphenyl)sulfonyl]oxy]-; Tosylate derivative of 7-amino-4-hydroxy-2-naphthalenesulfonic acid; 7-Amino-4-tosyloxynaphthalene-2-sulfonic acid; 68003-33-8; Amino tosyloxy naphthalene sulfonic acid
EINECS	Contact for details

Quality Control

Our production of 7-Amino-4-[[(p-Tolyl)Sulphonyl]Oxy]Naphthalene-2-Sulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistent quality and reliable performance for your synthesis processes. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Related Substances (HPLC)	Total impurities ≤ 5.0%
Solubility	Soluble in alkaline aqueous solutions

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