Description

3 4,5-Dichloro-2-(Methylsulfonyl)- (2H)-Pyridazinone is a high-purity, synthetically derived heterocyclic compound serving as a critical advanced intermediate in modern chemical synthesis. Its value lies in its functionalized pyridazinone core, which provides a versatile scaffold for constructing more complex molecules with targeted biological or material properties. This product is essential for research and development chemists and process engineers in the pharmaceutical and agrochemical industries, where it is used to develop new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, inflammation, or infectious diseases.
• Agrochemical Synthesis: Used in the research and production of next-generation herbicides, fungicides, and insecticides, leveraging its dichloro and methylsulfonyl functional groups.
• Chemical Research & Development: Serves as a versatile precursor for heterocyclic chemistry, enabling the exploration of new chemical spaces and reaction pathways in academic and industrial labs.
• Material Science Applications: Investigated for use in the development of specialty polymers, ligands for catalysis, or organic electronic materials due to its unique molecular structure.

Basic Information

Product Name	3 4,5-Dichloro-2-(Methylsulfonyl)- (2H)-Pyridazinone
CAS No.	91626-52-7
Molecular Formula	C5H4Cl2N2O3S
Molecular Weight	242.07 g/mol
Synonyms	3,4,5-Trichloro-2-(methylsulfonyl)pyridazin-6-one; 3,4,5-Trichloro-6-oxo-1,6-dihydropyridazine-2-sulfonic acid methyl ester; 2H-Pyridazinone, 3,4,5-trichloro-2-(methylsulfonyl)-; 3,4,5-Trichloro-2-methylsulfonylpyridazin-6(2H)-one; 3,4,5-Trichloro-1,6-dihydro-6-oxo-2-pyridazinyl methyl sulfone
EINECS	Contact for details

Quality Control

Our 3 4,5-Dichloro-2-(Methylsulfonyl)- (2H)-Pyridazinone is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for use in sensitive synthesis applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and consistency for our global B2B clients.

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 reducing agents. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
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.