Description

5-[4,5-Dihydro-5-Oxo-3-[(1-Oxooctadecyl)Amino]-1H-Pyrazol-1-Yl]-2-Phenoxy-Benzenesulfonic Acid is a high-purity, synthetic organic compound belonging to the class of pyrazolone-based sulfonic acids. This specialty chemical is valued for its unique molecular structure, which combines a long hydrophobic alkyl chain with a hydrophilic sulfonic acid group, making it a versatile intermediate and functional additive. It is primarily sought after by manufacturers in the pharmaceutical, agrochemical, and advanced material synthesis sectors for research and production purposes.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting specific biological pathways.
• Agrochemical Synthesis: Used in the research and development of advanced herbicides, fungicides, and plant growth regulators due to its bioactive pyrazolone core.
• Dye and Pigment Manufacturing: Acts as a functional intermediate or a coupling agent in the production of azo dyes and high-performance organic pigments.
• Surfactant and Detergent Research: Investigated for its potential as a specialized anionic surfactant or emulsifier, leveraging its amphiphilic structure.
• Polymer Additive: Can be utilized as a monomer or functional additive to impart specific properties like hydrophilicity or ionic character to polymers.
• Chemical Research & Development: Employed as a standard or reagent in organic synthesis and medicinal chemistry research projects.

Basic Information

Product Name	5-[4,5-Dihydro-5-Oxo-3-[(1-Oxooctadecyl)Amino]-1H-Pyrazol-1-Yl]-2-Phenoxy-Benzenesulfonic Acid
CAS No.	25985-53-9
Molecular Formula	C₃₃H₄₇N₃O₆S
Molecular Weight	613.81 g/mol
Synonyms	5-[4,5-Dihydro-5-oxo-3-(stearoylamino)-1H-pyrazol-1-yl]-2-phenoxybenzenesulfonic acid; 2-Phenoxy-5-[4,5-dihydro-5-oxo-3-(stearoylamino)-1H-pyrazol-1-yl]benzenesulfonic acid; Stearic acid amide of 5-amino-1-(2-phenoxy-5-sulfophenyl)-1H-pyrazol-3-ol; 25985-53-9; 5-(4,5-Dihydro-5-oxo-3-[(1-oxooctadecyl)amino]-1H-pyrazol-1-yl)-2-phenoxybenzenesulfonic acid; Benzenesulfonic acid, 5-[4,5-dihydro-5-oxo-3-[(1-oxooctadecyl)amino]-1H-pyrazol-1-yl]-2-phenoxy-
EINECS	Contact for details

Quality Control

Our production of 5-[4,5-Dihydro-5-Oxo-3-[(1-Oxooctadecyl)Amino]-1H-Pyrazol-1-Yl]-2-Phenoxy-Benzenesulfonic Acid adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, IR and NMR for structural confirmation, and loss on drying to control moisture content. We provide full traceability and Certificates of Analysis (COA) are available upon request to ensure compliance with your specific research or production requirements.

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). This product is hygroscopic (moisture-sensitive) and must be kept under dry, inert conditions to prevent degradation. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
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.