Description

5-Amino-4-Methoxy-2-(4-Amino-5-Methoxy-2-Sulfophenyl)Benzenesulfonic Acid is a specialized disulfonated aromatic amine derivative, serving as a critical high-purity intermediate in advanced chemical synthesis. Its precise molecular structure provides unique reactivity and chromophoric properties, making it essential for producing high-value, performance-driven compounds. This product is primarily required by manufacturers in the pharmaceutical, specialty dye, and advanced material sectors seeking reliable, consistent-quality building blocks for complex processes.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for specialized therapeutic agents.
• Specialty Dye & Pigment Manufacturing: Used in the production of high-performance, light-fast azo dyes and pigments for textiles, inks, and coatings.
• Liquid Crystal & Electronic Material Synthesis: Serves as a building block for creating advanced organic compounds used in display technologies and electronic chemicals.
• Bioconjugation & Probe Development: Utilized in research and diagnostic applications for labeling and probe synthesis due to its reactive amine and sulfonic acid groups.
• Chemical Research & Development: Employed as a standard or reagent in R&D for exploring new synthetic pathways and novel compound libraries.
• Corrosion Inhibitor Formulation: Acts as a component in specialized formulations for industrial metal treatment and protection.

Basic Information

Product Name	5-Amino-4-Methoxy-2-(4-Amino-5-Methoxy-2-Sulfophenyl)Benzenesulfonic Acid
CAS No.	6404-70-2
Molecular Formula	C14H16N2O8S2
Molecular Weight	404.42 g/mol
Synonyms	5-Amino-4-methoxy-2-(4-amino-5-methoxy-2-sulfophenyl)benzenesulfonic acid; 2,2'-(4,4'-Diamino-3,3'-dimethoxy[1,1'-biphenyl]-6,6'-diyl)bis(sulfonic acid); 6,6'-Diamino-3,3'-dimethoxy[1,1'-biphenyl]-2,2'-disulfonic acid; 4,4'-Diamino-3,3'-dimethoxybiphenyl-6,6'-disulfonic acid; Biphenyl-2,2'-disulfonic acid, 4,4'-diamino-3,3'-dimethoxy-; o-Dianisidine-6,6'-disulfonic acid; Fast Blue B Base disulfonic acid; Contact for additional trade names.
EINECS	229-073-3

Quality Control

Our 5-Amino-4-Methoxy-2-(4-Amino-5-Methoxy-2-Sulfophenyl)Benzenesulfonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for use as a pharmaceutical and specialty chemical intermediate. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with each shipment to guarantee traceability and compliance.

Storage

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

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%
Solubility (Test)	Soluble in alkaline aqueous solutions

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