Description

4,5-Dichloro-2-Ethylsulfonyl-Pyridazin-3-One is a specialized heterocyclic compound featuring a pyridazinone core functionalized with chloro and ethylsulfonyl groups. This unique molecular structure makes it a valuable high-purity intermediate for advanced chemical synthesis, particularly in the development of active pharmaceutical ingredients (APIs) and agrochemicals. It is primarily sought after by research institutions, fine chemical manufacturers, and pharmaceutical companies engaged in the synthesis of novel therapeutic and crop protection agents.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and other therapeutic areas.
• Agrochemical Synthesis: Serves as a critical precursor for developing advanced herbicides, fungicides, and insecticides with specific modes of action.
• Chemical Research & Development: Used in academic and industrial R&D for exploring new heterocyclic chemistry and creating libraries of compounds for biological screening.
• Fine Chemical Production: Employed in the multi-step synthesis of complex, high-value specialty chemicals for various industrial applications.
• Material Science: Potential use as a monomer or functional additive in the development of advanced polymers with specific electronic or physical properties.

Basic Information

Product Name	4,5-Dichloro-2-Ethylsulfonyl-Pyridazin-3-One
CAS No.	155164-54-8
Molecular Formula	C6H6Cl2N2O3S
Molecular Weight	265.10 g/mol
Synonyms	2-Ethylsulfonyl-4,5-dichloropyridazin-3(2H)-one; 4,5-Dichloro-2-(ethylsulfonyl)-3(2H)-pyridazinone; 4,5-Dichloro-2-(ethylsulfonyl)pyridazin-3(2H)-one; 3(2H)-Pyridazinone, 4,5-dichloro-2-(ethylsulfonyl)-; 4,5-Dichloro-2-ethylsulfonyl-3(2H)-pyridazinone; 155164-54-8; 4,5-Dichloro-2-(ethylsulfonyl)pyridazin-3-one
EINECS	Contact for details

Quality Control

Our 4,5-Dichloro-2-Ethylsulfonyl-Pyridazin-3-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for use as a pharmaceutical intermediate. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

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 inert atmosphere conditions to maintain product integrity.

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.