Description

2,4-Dihydro-4-[[2-Hydroxy-5-(Methylsulphonyl)-4-Nitrophenyl]Azo]-5-Methyl-2-Phenyl-3H-Pyrazol-3-One is a specialized azo pyrazolone derivative valued for its distinct chromophoric properties. This compound is engineered to deliver consistent performance as a key intermediate in the synthesis of high-performance colorants. It is primarily sought after by manufacturers in the pigments, dyes, and advanced materials sectors who require precise chemical building blocks for their formulations.

Application

• Primary Intermediate for High-Performance Pigments: Serves as a critical precursor in the manufacturing of organic pigments, particularly azo-based types known for their color strength and durability.
• Specialty Dye Synthesis: Used in the production of specialized dyes for applications requiring specific lightfastness and chemical resistance properties.
• Functional Material Development: Investigated for use in the research and development of advanced materials, including non-linear optical (NLO) materials and sensors, due to its complex molecular structure.
• Research & Development Chemical: Employed in academic and industrial R&D laboratories for studying azo coupling reactions and developing novel chromophores.
• Fine Chemical Synthesis: Acts as a building block in multi-step synthetic routes for complex organic molecules in pharmaceutical and agrochemical research.

Basic Information

Product Name	2,4-Dihydro-4-[[2-Hydroxy-5-(Methylsulphonyl)-4-Nitrophenyl]Azo]-5-Methyl-2-Phenyl-3H-Pyrazol-3-One
CAS No.	35954-29-1
Molecular Formula	C17H15N5O6S
Molecular Weight	417.40 g/mol
Synonyms	4-[(2-Hydroxy-5-methylsulfonyl-4-nitrophenyl)azo]-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one; 4-[[2-Hydroxy-5-(Methylsulfonyl)-4-nitrophenyl]azo]-5-methyl-2-phenyl-3H-pyrazol-3-one; 35954-29-1; Azo pyrazolone derivative; CI 12715; Pigment Yellow 191; Disperse Yellow 191 (related class).
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Each lot is analyzed using modern analytical techniques including HPLC, IR spectroscopy, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment 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 room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms to Reference Spectrum
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
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.