Description

7-[n-Methyl-n-(3-Carboxy-4-Hydroxyphenylfonyl)]Amino-1-Naphthol-3-Sulfonic Acid is a high-purity, specialized organic intermediate of significant importance in advanced chemical synthesis. Its value lies in its multifunctional molecular structure, which serves as a critical building block for creating complex dyes, pigments, and functional materials. This compound is essential for manufacturers and R&D laboratories in the fine chemical, specialty dye, and advanced material sectors seeking reliable, high-quality intermediates for their proprietary formulations.

Application

• Key Intermediate for Dyes and Pigments: Primarily used in the synthesis of high-performance acid dyes, reactive dyes, and azo pigments, contributing to color strength and fastness properties.
• Functional Material Synthesis: Serves as a precursor in the production of specialty polymers and materials where sulfonic acid and naphthol functionalities are required.
• Research & Development: A valuable building block in pharmaceutical and agrochemical research for constructing complex molecular architectures.
• Chemical Synthesis Reagent: Utilized in organic synthesis laboratories for coupling reactions and introducing specific functional groups into target molecules.
• Analytical Chemistry: Can be employed as a standard or reagent in specific analytical methods due to its distinct chromophoric properties.

Basic Information

Item	Details
Product Name	7-[n-Methyl-n-(3-Carboxy-4-Hydroxyphenylfonyl)]Amino-1-Naphthol-3-Sulfonic Acid
CAS No.	6421-79-0
Molecular Formula	C19H17NO8S
Molecular Weight	419.41 g/mol
Synonyms	7-[Methyl(3-carboxy-4-hydroxyphenyl)sulfamoyl]-1-naphthol-3-sulfonic acid; 7-[(3-Carboxy-4-hydroxyphenyl)methylsulfamoyl]-1-naphthol-3-sulfonic acid; 1-Naphthol-3-sulfonic acid, 7-[(3-carboxy-4-hydroxyphenyl)methylamino]-; Acid Red 337 (related dye structure); Azo dye intermediate
EINECS	Contact for details

Quality Control

Our production of 7-[n-Methyl-n-(3-Carboxy-4-Hydroxyphenylfonyl)]Amino-1-Naphthol-3-Sulfonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for use in sensitive synthesis applications. A detailed Certificate of Analysis (COA) is provided with each shipment, guaranteeing traceability, consistency, and compliance with your technical requirements.

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 material is light-sensitive; prolonged exposure to light should be avoided to maintain stability.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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