Description

5-Amino-4-Methoxy-2-Nitrobenzenesulfonic Acid is a specialized aromatic sulfonic acid derivative that serves as a critical intermediate in the synthesis of complex organic molecules. Its unique structure, featuring amino, methoxy, and nitro substituents, makes it a versatile building block for creating high-value dyes, pigments, and functional chemicals. This compound is essential for manufacturers and R&D laboratories in the fine chemical, pharmaceutical, and agrochemical sectors seeking to develop novel compounds with specific optical or reactive properties.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes, acid dyes, and other complex colorants, particularly for textiles, leather, and inks.
• Pharmaceutical Synthesis: Used as a building block in the research and development of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Agrochemical Manufacturing: Serves as an intermediate in the production of certain herbicides, pesticides, and plant growth regulators.
• Chemical Research: Employed in academic and industrial R&D for studying sulfonation reactions, nitro group reductions, and the synthesis of novel heterocyclic compounds.
• Functional Material Production: Potential use in the development of specialty polymers, corrosion inhibitors, and photographic chemicals.

Basic Information

Product Name	5-Amino-4-Methoxy-2-Nitrobenzenesulfonic Acid
CAS No.	6375-05-9
Molecular Formula	C7H8N2O6S
Molecular Weight	248.21 g/mol
Synonyms	2-Nitro-5-amino-4-methoxybenzenesulfonic Acid; 4-Methoxy-5-amino-2-nitrobenzenesulfonic Acid; 5-Amino-4-methoxy-2-nitrobenzenesulfonic acid; Benzenesulfonic acid, 5-amino-4-methoxy-2-nitro-; 2-Nitro-4-methoxy-5-aminobenzenesulfonic Acid; 5-Amino-4-methoxy-2-nitrobenzene-1-sulfonic acid
EINECS	228-919-4

Quality Control

Our 5-Amino-4-Methoxy-2-Nitrobenzenesulfonic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in sensitive synthesis applications. Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are available for every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed after opening to minimize exposure to atmospheric moisture and light, which can affect stability.

Specification

Item	Specification
Appearance	Yellow to brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 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.