Description

p-[4,5-Dihydro-3-Methyl-4-[[4-Methyl-3-[(p-Tolylamino)Sulphonyl]Phenyl]Azo]-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid is a specialized azo pyrazolone derivative, a high-value chemical intermediate prized for its complex molecular structure. This compound matters for its role in synthesizing advanced colorants and functional materials, offering precise chemical functionality for demanding applications. It is primarily needed by manufacturers in the fine chemicals, specialty dyes, and advanced material research sectors seeking consistent, high-purity intermediates for product development.

Application

• Primary Intermediate for Specialty Dyes & Pigments: Serves as a key building block in the synthesis of high-performance azo dyes and organic pigments, particularly for applications requiring specific lightfastness and color properties.
• Fine Chemical Synthesis: Used in the multi-step synthesis of complex pharmaceutical intermediates or agrochemical active ingredients where its specific sulfonic acid and pyrazolone functionalities are required.
• Functional Material Research: Employed in R&D for creating novel polymers, liquid crystals, or other advanced materials that incorporate azo and heterocyclic components.
• Analytical Chemistry & Reagents: May be utilized as a standard or a specialized reagent in analytical methods development and chemical research.
• Photographic & Imaging Chemicals: Potential application in the formulation of light-sensitive chemicals for specialized photographic or non-impact printing processes.

Basic Information

Product Name	p-[4,5-Dihydro-3-Methyl-4-[[4-Methyl-3-[(p-Tolylamino)Sulphonyl]Phenyl]Azo]-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid
CAS No.	83006-47-7
Molecular Formula	C24H23N5O6S2
Molecular Weight	541.60 g/mol
Synonyms	Benzenesulfonic acid, p-[4,5-dihydro-3-methyl-4-[[4-methyl-3-[(p-tolylamino)sulfonyl]phenyl]azo]-5-oxo-1H-pyrazol-1-yl]-; 4-[4,5-Dihydro-3-methyl-4-({4-methyl-3-[(4-methylphenyl)sulfamoyl]phenyl}diazenyl)-5-oxo-1H-pyrazol-1-yl]benzenesulfonic acid; 1-(4-Sulfophenyl)-3-methyl-4-[(3-methyl-4-(N-p-tolylsulfamoyl)phenyl)azo]-5-pyrazolone; Azo pyrazolone sulfonic acid derivative; CI 19140 (related lake former); Acid Yellow 23 related intermediate; Food Yellow 4 precursor; Tartrazine analogue intermediate
EINECS	Contact for details

Quality Control

Our production of p-[4,5-Dihydro-3-Methyl-4-[[4-Methyl-3-[(p-Tolylamino)Sulphonyl]Phenyl]Azo]-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the exacting standards required for fine chemical intermediates. Certificates of Analysis (COA) detailing key specifications such as assay, impurity profile, and physical characteristics are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Yellow to orange powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%
Solubility	Soluble in alkaline aqueous solutions; slightly soluble in most organic solvents

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