Description

2-(4-Chlorophenyl)-2,4-Dihydro-5-Methyl-4-(Phenylazo)-3H-Pyrazol-3-One is a specialized heterocyclic organic compound featuring a pyrazolone core substituted with chlorophenyl and phenylazo groups. This structure is significant for its role as a key synthetic intermediate and functional chromophore in advanced chemical manufacturing. It is primarily required by industries involved in the production of high-performance pigments, dyes, and active pharmaceutical ingredients (APIs) where precise molecular architecture is critical.

Application

• Primary intermediate in the synthesis of high-value azo pigments and dyes for plastics, inks, and coatings.
• Key building block for pharmaceutical research and development, particularly in creating novel therapeutic agents.
• Used in the manufacture of specialty colorants for automotive and industrial applications requiring light and weather fastness.
• Functional component in the development of advanced materials and chemical sensors.
• Research chemical in academic and industrial laboratories for studying heterocyclic chemistry and photophysical properties.

Basic Information

Product Name	2-(4-Chlorophenyl)-2,4-Dihydro-5-Methyl-4-(Phenylazo)-3H-Pyrazol-3-One
CAS No.	69847-49-0
Molecular Formula	C16H13ClN4O
Molecular Weight	312.75 g/mol
Synonyms	5-Methyl-2-(4-chlorophenyl)-4-(phenylazo)-2,4-dihydro-3H-pyrazol-3-one; 4-(Phenylazo)-5-methyl-2-(4-chlorophenyl)-2,4-dihydro-3H-pyrazol-3-one; 2,4-Dihydro-5-methyl-2-(4-chlorophenyl)-4-(phenylazo)-3H-pyrazol-3-one; Azo pyrazolone derivative; Pyrazolone azo compound; 69847-49-0; (4-Chlorophenyl)methylphenylazopyrazolone
EINECS	Contact for details

Quality Control

Our production of 2-(4-Chlorophenyl)-2,4-Dihydro-5-Methyl-4-(Phenylazo)-3H-Pyrazol-3-One adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. The product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	Orange to red crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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