Description

5-Amino-6-Methoxynaphthalene-2-Sulphonic Acid is a high-purity, specialized naphthalene derivative serving as a critical intermediate in advanced organic synthesis. Its value lies in its unique molecular structure, which provides a reactive amino group and a sulphonic acid moiety on a methoxy-substituted naphthalene backbone, enabling precise chemical transformations. This compound is essential for manufacturers in the dyes and pigments, pharmaceutical, and agrochemical industries, where it is used to synthesize complex, high-performance molecules.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing azo dyes, acid dyes, and reactive dyes, particularly for textiles and inks, where it contributes to color fastness and specific hue development.
• Pharmaceutical Synthesis: Used as a sophisticated intermediate in the research and production of active pharmaceutical ingredients (APIs), especially those with naphthalene-based structures.
• Agrochemical Manufacturing: Employed in the synthesis of advanced herbicides, fungicides, and plant growth regulators that require specific targeting and efficacy.
• Functional Chemical Intermediate: Serves in the production of optical brighteners, fluorescent whitening agents, and other specialty chemicals where its sulphonic acid group enhances solubility and application properties.
• Research & Development: A valuable reagent in academic and industrial R&D labs for exploring new synthetic pathways and developing novel organic compounds.

Basic Information

Product Name	5-Amino-6-Methoxynaphthalene-2-Sulphonic Acid
CAS No.	86-45-3
Molecular Formula	C11H11NO4S
Molecular Weight	253.27 g/mol
Synonyms	6-Methoxy-5-aminonaphthalene-2-sulfonic Acid; 5-Amino-6-methoxy-2-naphthalenesulfonic Acid; 2-Naphthalenesulfonic acid, 5-amino-6-methoxy-; 6-Methoxy-1-naphthylamine-3-sulfonic Acid; 1-Amino-2-methoxy-6-naphthalenesulfonic Acid; 5-Amino-6-methoxynaphthalene-2-sulfonic Acid; Kyselina 5-amino-6-methoxy-naftalen-2-sulfonova; 86-45-3
EINECS	201-672-8

Quality Control

Our production of 5-Amino-6-Methoxynaphthalene-2-Sulphonic Acid adheres to a stringent quality management system to ensure batch-to-batch consistency and reliability. Every lot is analyzed against rigorous in-house specifications using advanced techniques like HPLC and NMR. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment, ensuring full traceability and compliance with your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light brown powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility	Soluble in alkaline aqueous solutions

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