Description

4-Chloro-2-Methylpyridazin-3(2H)-One is a versatile heterocyclic building block of significant importance in advanced organic synthesis. Its core structure serves as a key intermediate for the development of novel active pharmaceutical ingredients (APIs) and agrochemicals. This compound is primarily sought by research institutions and industrial manufacturers in the pharmaceutical and agrochemical sectors for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of various drug candidates, particularly those targeting central nervous system (CNS) disorders and other therapeutic areas.
• Agrochemical Synthesis: Used in the development of new herbicides, fungicides, and insecticides, leveraging its pyridazinone core for biological activity.
• Chemical Research & Development: Serves as a fundamental scaffold in medicinal chemistry for structure-activity relationship (SAR) studies and library synthesis.
• Material Science Precursor: Potential use in the synthesis of specialized ligands, dyes, or photoactive materials for advanced applications.

Basic Information

Product Name	4-Chloro-2-Methylpyridazin-3(2H)-One
CAS No.	69207-44-9
Molecular Formula	C5H5ClN2O
Molecular Weight	144.56 g/mol
Synonyms	4-Chloro-2-methyl-2H-pyridazin-3-one; 4-Chloro-2-methyl-3(2H)-pyridazinone; 2-Methyl-4-chloropyridazin-3(2H)-one; 4-Chloro-2-methylpyridazin-3-one; 3(2H)-Pyridazinone, 4-chloro-2-methyl-; 4-Chloro-2-methyl-3-pyridazinol; 4-Chloro-2-methyl-3-hydroxypyridazine
EINECS	Contact for details

Quality Control

Our 4-Chloro-2-Methylpyridazin-3(2H)-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white 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%

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