Description

4-[4-[[4-(Dimethylamino)Phenyl]Methylene]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid is a high-purity, functionalized pyrazolone derivative with a sulfonic acid group, offering unique chemical reactivity and solubility characteristics. This compound is valued for its role as a versatile synthetic intermediate and a potential precursor for advanced materials. It is primarily sought by research and development teams in the fine chemical, pharmaceutical, and specialty dye industries for creating novel compounds with specific optical or biological properties. The CAS number for this product is 33981-19-0.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting specific receptor sites.
• Dye and Pigment Synthesis: Acts as a precursor for creating specialized azo dyes and pigments, leveraging its chromophore structure for color development.
• Chemical Research & Development: Used in academic and industrial R&D for exploring new organic reactions and synthesizing complex heterocyclic compounds.
• Material Science: Investigated as a monomer or additive for producing functional polymers with enhanced solubility or ionic characteristics due to the sulfonic acid group.
• Analytical Chemistry: May be employed as a reagent or standard in chromatographic methods or spectroscopic studies.
• Ligand Synthesis: Potential use in creating chelating agents or ligands for metal catalysis and coordination chemistry.

Basic Information

Product Name	4-[4-[[4-(Dimethylamino)Phenyl]Methylene]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid
CAS No.	33981-19-0
Molecular Formula	C19H19N3O4S
Molecular Weight	385.44 g/mol
Synonyms	Benzenesulfonic acid, 4-[4-[(4-(dimethylamino)phenyl)methylene]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-; 1-(4-Sulfophenyl)-3-methyl-4-[(4-dimethylamino)benzylidene]-2-pyrazolin-5-one; 4-[4-[(4-Dimethylaminophenyl)methylene]-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl]benzenesulfonic acid; 33981-19-0; 4-(4-((4-(Dimethylamino)benzylidene)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid; Azo dye intermediate; Pyrazolone sulfonic acid derivative.
EINECS	Contact for details

Quality Control

Our 4-[4-[[4-(Dimethylamino)Phenyl]Methylene]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and NMR/IR for structural confirmation, to ensure consistent quality and identity. Certificates of Analysis (COA) detailing all specifications 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 a controlled room temperature (15-25°C). Keep away from strong acids and organic solvents. Due to its complex organic structure, prolonged exposure to elevated temperatures or humidity should be avoided.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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