Description

o-[[[4,5-Dihydro-1-[2-(Octadecylthio)Phenyl]-5-Oxo-1H-Pyrazol-3-Yl]Amino]Carbonyl]Benzenesulphonic Acid is a specialized organic intermediate featuring a complex molecular architecture that combines a pyrazolone core with a long-chain thioether and a benzenesulfonic acid group. This compound matters for its role as a key precursor in the synthesis of high-performance dyes, pigments, and functional materials, where its structure imparts specific color, solubility, and binding properties. Industrial chemical manufacturers and R&D laboratories in the specialty chemicals, advanced material science, and dye manufacturing sectors require this high-purity building block for developing novel products.

Application

• Precursor for high-performance dyes and pigments, particularly for textiles and plastics.
• Key intermediate in the synthesis of specialty surfactants and dispersants due to its amphiphilic structure.
• Functional monomer for advanced polymer materials, contributing to specific thermal or chemical resistance.
• Research and development chemical for novel organic electronic materials and photoactive compounds.
• Intermediate for liquid crystal and display technology components.
• Additive for ink and coating formulations to enhance performance characteristics.

Basic Information

Product Name	o-[[[4,5-Dihydro-1-[2-(Octadecylthio)Phenyl]-5-Oxo-1H-Pyrazol-3-Yl]Amino]Carbonyl]Benzenesulphonic Acid
CAS No.	2566-86-1
Molecular Formula	C₃₄H₄₉N₃O₅S₂
Molecular Weight	643.90 g/mol
Synonyms	Benzenesulfonic acid, o-[[[4,5-dihydro-1-[2-(octadecylthio)phenyl]-5-oxo-1H-pyrazol-3-yl]amino]carbonyl]-; 2-({[1-[2-(Octadecylsulfanyl)phenyl]-5-oxo-4,5-dihydro-1H-pyrazol-3-yl]carbamoyl})benzenesulfonic acid; 1-[2-(Octadecylthio)phenyl]-3-(2-sulfobenzoylamino)-5-pyrazolone; CAS 2566-86-1; Pyrazolone derivative intermediate; Long-chain thioether pyrazolone sulfonic acid.
EINECS	Contact for details

Quality Control

Our production of o-[[[4,5-Dihydro-1-[2-(Octadecylthio)Phenyl]-5-Oxo-1H-Pyrazol-3-Yl]Amino]Carbonyl]Benzenesulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity and consistent composition, meeting the exacting requirements of advanced chemical synthesis. Comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 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.