Description

4-[4-[[4-[Bis(2-Cyanoethyl)Amino]Phenyl]Methylene]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid is a specialized organic intermediate featuring a complex molecular architecture combining pyrazolone, benzenesulfonic acid, and cyanoethylamino functional groups. This compound matters for its role as a key precursor in the synthesis of advanced dyes and functional materials, where its structure imparts specific chromophoric and solubility properties. Industrial and research chemists in the dye manufacturing, photographic chemical, and advanced material synthesis sectors require this high-purity building block to develop products with precise performance characteristics.

Application

• Dye and Pigment Intermediate: A critical precursor for synthesizing complex azo and pyrazolone-based dyes, particularly acid dyes for textiles like wool, silk, and nylon.
• Photographic Chemicals: Used in the formulation of color couplers and other light-sensitive compounds for photographic films and papers.
• Functional Material Synthesis: Serves as a building block for creating organic semiconductors, nonlinear optical (NLO) materials, and other advanced polymers.
• Research & Development: Employed in academic and industrial R&D for exploring new chromophores, sensors, and specialty organic compounds.
• Fine Chemical Production: Acts as an intermediate in multi-step synthetic routes for pharmaceuticals and other high-value fine chemicals.

Basic Information

Product Name	4-[4-[[4-[Bis(2-Cyanoethyl)Amino]Phenyl]Methylene]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid
CAS No.	68541-05-9
Molecular Formula	C23H21N5O4S
Molecular Weight	463.51 g/mol
Synonyms	Benzenesulfonic acid, 4-[4-[[4-[bis(2-cyanoethyl)amino]phenyl]methylene]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-; 4-(4-((4-(Bis(2-cyanoethyl)amino)phenyl)methylene)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid; Pyrazolone-based sulfonic acid dye intermediate; Acid Dye Intermediate 68541-05-9; 1-(4-Sulfophenyl)-3-methyl-4-((4-(N,N-bis(2-cyanoethyl)amino)phenyl)methylene)-2-pyrazolin-5-one
EINECS	Contact for details

Quality Control

Our production of 4-[4-[[4-[Bis(2-Cyanoethyl)Amino]Phenyl]Methylene]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

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 chemical nature as a strong acid/organic solvent-compatible compound, keep away from incompatible materials such as strong bases and oxidizing agents. The container must be kept tightly sealed to protect the product from moisture absorption and contamination.

Specification

Item	Specification
Appearance	Yellow to brownish powder or crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Typical 97-99%)
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in polar organic solvents and alkaline aqueous solutions

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