Description

5-Chloro-1,3-Dimethyl-4-(2-Phenyldiaz-1-Enyl)-1H-Pyrazole is a specialized heterocyclic compound featuring a pyrazole core substituted with a phenyldiazenyl group. This unique structure makes it a valuable high-purity intermediate for advanced chemical synthesis, particularly in the development of functional dyes and active pharmaceutical ingredients (APIs). It is primarily sought by research institutions, fine chemical manufacturers, and pharmaceutical R&D departments engaged in creating novel compounds with specific optical or biological properties.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), particularly those targeting specific biological pathways.
• Dye & Pigment Manufacturing: Serves as a crucial precursor for the production of advanced azo dyes and pigments, contributing to color strength and stability in textiles, inks, and coatings.
• Agrochemical Research: Used in the development of new generation pesticides and herbicides, where its heterocyclic structure can be leveraged for bioactivity.
• Chemical Research & Development: Employed as a versatile reagent in organic synthesis for constructing complex molecular architectures in academic and industrial labs.
• Material Science: Investigated for use in the synthesis of organic semiconductors, photochromic materials, and other functional polymers.

Basic Information

Item	Details
Product Name	5-Chloro-1,3-Dimethyl-4-(2-Phenyldiaz-1-Enyl)-1H-Pyrazole
CAS No.	78431-21-7
Molecular Formula	C11H11ClN4
Molecular Weight	234.69 g/mol
Synonyms	5-Chloro-1,3-dimethyl-4-(phenyldiazenyl)-1H-pyrazole; 4-(2-Phenyldiazenyl)-5-chloro-1,3-dimethyl-1H-pyrazole; 5-Chloro-1,3-dimethyl-4-(phenylazo)-1H-pyrazole; 1H-Pyrazole, 5-chloro-1,3-dimethyl-4-(2-phenyldiazenyl)-; 78431-21-7; Azo pyrazole derivative
EINECS	Contact for details

Quality Control

We maintain a strict quality management system to ensure batch-to-batch consistency and high purity. Our production of 5-Chloro-1,3-Dimethyl-4-(2-Phenyldiaz-1-Enyl)-1H-Pyrazole adheres to current Good Manufacturing Practices (cGMP) where applicable. Every lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles, available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from heat, sparks, and open flames. Due to its light-sensitive nature, containers should be amber-colored or stored in light-resistant secondary packaging.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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