Description

3-[4,5-Dihydro-5-Oxo-3-[4-[(1-Oxooctadecyl)Amino]Phenyl]-1H-Pyrazol-1-Yl]Benzenesulphonic Acid is a high-purity, functionalized organic compound featuring a pyrazolone core linked to a benzenesulfonic acid group via a stearamido-phenyl bridge. This unique molecular architecture makes it a valuable intermediate for synthesizing specialized dyes, pigments, and performance chemicals where specific light absorption and solubility properties are required. It is primarily sought by manufacturers in the fine chemical, specialty dye, and advanced material research sectors.

Application

• Key Intermediate for Dyes & Pigments: Serves as a critical building block in the synthesis of azo and other high-performance dyes, particularly for textiles, inks, and coatings.
• Specialty Chemical Synthesis: Used in the production of functional chemicals requiring specific sulfonic acid and amide groups for enhanced solubility or ionic character.
• Research & Development: Employed in academic and industrial R&D labs for developing novel chromophores, sensors, or photoactive materials.
• Liquid Crystal & Electronic Material Precursor: Potential use as a precursor in the synthesis of organic components for display technologies or electronic applications.
• Biomolecular Staining Agent Intermediate: Can be utilized in the development of specialized staining agents for biological and histological applications.

Basic Information

Product Name	3-[4,5-Dihydro-5-Oxo-3-[4-[(1-Oxooctadecyl)Amino]Phenyl]-1H-Pyrazol-1-Yl]Benzenesulphonic Acid
CAS No.	97158-37-7
Molecular Formula	C33H45N3O5S
Molecular Weight	595.79 g/mol
Synonyms	Benzenesulfonic acid, 3-[4,5-dihydro-5-oxo-3-[4-(octadecanoylamino)phenyl]-1H-pyrazol-1-yl]-; 3-(4,5-Dihydro-5-oxo-3-(4-(stearoylamino)phenyl)-1H-pyrazol-1-yl)benzenesulfonic acid; 1-(3-Sulfophenyl)-3-(4-stearamidophenyl)-5-pyrazolone; Stearic acid amide derivative of pyrazolone sulfonic acid; CI 19140 Intermediate (related); Acid Yellow 23 related intermediate; Pyrazolone sulfonic acid stearamide derivative
EINECS	Contact for details

Quality Control

Our production of 3-[4,5-Dihydro-5-Oxo-3-[4-[(1-Oxooctadecyl)Amino]Phenyl]-1H-Pyrazol-1-Yl]Benzenesulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay (HPLC), impurity profile, and physical characteristics is provided with each shipment to guarantee reliable performance in your synthesis processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and 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 degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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