Description

4,5-Dichloro-2-Methylpyridazin-3-One is a high-purity heterocyclic building block of significant importance in advanced organic synthesis. This compound serves as a critical intermediate for the development of active pharmaceutical ingredients (APIs) and agrochemicals, where its unique pyridazinone scaffold enables the creation of novel molecular structures. It is primarily sought after by research and development chemists, process development teams, and manufacturers in the pharmaceutical and agrochemical industries for creating new therapeutic and crop protection agents.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly in central nervous system (CNS) and cardiovascular therapeutic areas.
• Agrochemical Synthesis: Used as a precursor for developing advanced herbicides, fungicides, and insecticides with specific modes of action.
• Chemical Research & Development: Serves as a versatile scaffold for medicinal chemistry and structure-activity relationship (SAR) studies.
• Process Chemistry: Employed in the scale-up and optimization of synthetic routes for commercial production of fine chemicals.
• Material Science: Potential intermediate for the synthesis of specialty polymers and functional materials.

Basic Information

Product Name	4,5-Dichloro-2-Methylpyridazin-3-One
CAS No.	933-76-6
Molecular Formula	C5H4Cl2N2O
Molecular Weight	178.00 g/mol
Synonyms	2-Methyl-4,5-dichloropyridazin-3(2H)-one; 4,5-Dichloro-2-methyl-3(2H)-pyridazinone; 4,5-Dichloro-2-methyl-2H-pyridazin-3-one; 4,5-Dichloro-2-methyl-3-pyridazinol; 4,5-Dichloro-2-methyl-3-hydroxypyridazine; NSC 403697; 933-76-6
EINECS	Contact for details

Quality Control

Our 4,5-Dichloro-2-Methylpyridazin-3-One is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the stringent requirements of our global clientele. We provide full traceability and detailed Certificates of Analysis (COA) with every shipment, confirming compliance with agreed specifications. Our quality commitment supports applications requiring high-purity intermediates under cGMP or ISO 9001 frameworks.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong bases and oxidizing agents. 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
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
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.