Description

4-[(4-Aminophenyl)Sulfinyl]Phenylamine is a specialized aromatic amine derivative featuring both amine and sulfinyl functional groups. This compound matters as a versatile and high-value chemical intermediate, enabling the synthesis of complex molecules for advanced applications. It is primarily needed by manufacturers in the pharmaceutical, agrochemical, and specialty dye industries for research and production purposes.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for drugs targeting neurological and inflammatory conditions.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators.
• Dye and Pigment Manufacturing: Serves as a precursor for high-performance dyes, pigments, and optical brighteners.
• Polymer Chemistry: Acts as a monomer or curing agent in the production of specialty polyimides, epoxy resins, and other high-temperature polymers.
• Research & Development: Essential compound for organic synthesis and material science research in academic and industrial laboratories.
• Liquid Crystal and OLED Materials: Intermediate in the manufacture of electronic display components and organic light-emitting diodes.

Basic Information

Product Name	4-[(4-Aminophenyl)Sulfinyl]Phenylamine
CAS No.	119-59-5
Molecular Formula	C12H12N2OS
Molecular Weight	232.30 g/mol
Synonyms	4,4'-Diaminodiphenyl sulfoxide; Bis(4-aminophenyl) sulfoxide; Dapsone sulfoxide; DADPSO; 4-Aminophenyl sulfinyl aniline; 4,4'-Sulfinyldianiline; 1-Amino-4-[(4-aminophenyl)sulfinyl]benzene
EINECS	204-340-4

Quality Control

Our 4-[(4-Aminophenyl)Sulfinyl]Phenylamine is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for sensitive synthetic applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its light-sensitive and easily oxidized nature, it is recommended to store this material under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Light yellow to beige crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	162 - 166 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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