Description

5-Chloro-6-(4-Chlorophenyl)-2-Methylpyridazin-3(2H)-One is a high-purity, synthetically valuable pyridazinone derivative, serving as a critical advanced intermediate in modern organic synthesis. Its core value lies in enabling the development of novel active pharmaceutical ingredients (APIs) and agrochemicals, where precise molecular architecture is paramount. This compound is essential for research and development chemists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to build complex heterocyclic frameworks.

Application

• Pharmaceutical Intermediate: A key building block for the synthesis of novel drug candidates, particularly in therapeutic areas requiring pyridazinone scaffolds.
• Agrochemical Research: Used in the development of next-generation herbicides, fungicides, and insecticides, leveraging its bioactive heterocyclic core.
• Chemical Synthesis: Serves as a versatile precursor for further functionalization in medicinal and process chemistry for creating complex molecules.
• Material Science Research: Investigated as a monomer or additive for creating specialized polymers with unique thermal or optical properties.
• Academic & R&D Laboratories: Employed in methodological studies and as a reference standard for analytical and synthetic chemistry research.

Basic Information

Product Name	5-Chloro-6-(4-Chlorophenyl)-2-Methylpyridazin-3(2H)-One
CAS No.	849021-02-9
Molecular Formula	C11H8Cl2N2O
Molecular Weight	255.10 g/mol
Synonyms	5-Chloro-6-(4-chlorophenyl)-2-methyl-2,3-dihydropyridazin-3-one; 5-Chloro-6-(4-chlorophenyl)-2-methyl-3(2H)-pyridazinone; 2-Methyl-5,6-bis(4-chlorophenyl)pyridazin-3(2H)-one (common misnomer, verify structure); 5,6-Dichloro-2-methylpyridazin-3(2H)-one phenyl derivative; 849021-02-9; Pyridazinone derivative, chloro phenyl methyl substituted
EINECS	Contact for details

Quality Control

Every batch of 5-Chloro-6-(4-Chlorophenyl)-2-Methylpyridazin-3(2H)-One is produced under a strict quality management system. Our products undergo rigorous analytical testing, including HPLC, NMR, and MS, to ensure identity, purity, and consistency that meet the exacting standards of advanced intermediate applications. A comprehensive Certificate of Analysis (COA) detailing purity, impurities, and physical characteristics is provided with each shipment to guarantee traceability and support your 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 (typically 15-25°C). Keep away from incompatible materials. For long-term storage, consider an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Any single unknown impurity	≤ 0.5%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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