Description

4-Chloro-2-(3-Chlorophenyl)-5-(3,5-Dimethyl-1H-Pyrazol-1-Yl)-3(2H)-Pyridazinone is a high-purity, advanced pharmaceutical intermediate with a complex heterocyclic structure. This compound matters for its critical role as a key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring targeted molecular design. Industrial and research chemists in the pharmaceutical and agrochemical sectors need this precise chemical for developing next-generation products.

Application

• Pharmaceutical Intermediate: A key precursor in the research and synthesis of novel drug candidates, particularly for central nervous system (CNS) or anti-inflammatory targets.
• Agrochemical Research: Serves as a core scaffold for developing new herbicides or pesticides with specific modes of action.
• Chemical Biology Probe: Used in academic and industrial R&D to study enzyme inhibition or protein-ligand interactions due to its pyridazinone and pyrazole motifs.
• Material Science Research: Potential building block for creating specialty polymers or organic electronic materials with unique properties.
• Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for custom synthesis projects under cGMP conditions.
• Reference Standard: Used as an analytical standard for quality control and method development in API manufacturing.

Basic Information

Product Name	4-Chloro-2-(3-Chlorophenyl)-5-(3,5-Dimethyl-1H-Pyrazol-1-Yl)-3(2H)-Pyridazinone
CAS No.	320421-72-5
Molecular Formula	C15H12Cl2N4O
Molecular Weight	335.19 g/mol
Synonyms	4-Chloro-2-(3-chlorophenyl)-5-(3,5-dimethyl-1H-pyrazol-1-yl)pyridazin-3(2H)-one; 2-(3-Chlorophenyl)-4-chloro-5-(3,5-dimethyl-1H-pyrazol-1-yl)-2H-pyridazin-3-one; 320421-72-5; 4-Chloro-2-(3-chlorophenyl)-5-(3,5-dimethylpyrazol-1-yl)pyridazin-3(2H)-one; 5-(3,5-Dimethyl-1H-pyrazol-1-yl)-4-chloro-2-(3-chlorophenyl)-2H-pyridazin-3-one
EINECS	Contact for details

Quality Control

Our 4-Chloro-2-(3-Chlorophenyl)-5-(3,5-Dimethyl-1H-Pyrazol-1-Yl)-3(2H)-Pyridazinone is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via NMR and mass spectrometry, to ensure it meets the stringent requirements for pharmaceutical intermediate applications. Certificates of Analysis (COA) with complete batch data are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 15-25°C). This compound is light-sensitive (store away from light) and may be hygroscopic (moisture-sensitive); therefore, containers should be kept sealed under an inert atmosphere if specified for long-term storage.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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