Description

4,5-Dichloro-2-Ethyl-3(2H)-Pyridazinone is a versatile heterocyclic building block and key synthetic intermediate of significant commercial importance. Its unique pyridazinone core, functionalized with chloro and ethyl groups, makes it a critical precursor in the development of advanced agrochemicals and pharmaceuticals. This compound is primarily sought by R&D chemists and process development scientists in the fine chemical and active pharmaceutical ingredient (API) manufacturing sectors.

Application

• Agrochemical Intermediate: A key precursor in the synthesis of novel herbicides, fungicides, and plant growth regulators, leveraging its reactive halogen sites for further functionalization.
• Pharmaceutical Synthesis: Serves as a core scaffold for developing potential therapeutic agents, including enzyme inhibitors and receptor modulators.
• Chemical Research & Development: Used as a versatile building block in organic synthesis for constructing complex nitrogen-containing heterocycles.
• Material Science: Investigated for the development of specialty polymers and functional materials with specific electronic or photochemical properties.

Basic Information

Product Name	4,5-Dichloro-2-Ethyl-3(2H)-Pyridazinone
CAS No.	33098-10-1
Molecular Formula	C6H6Cl2N2O
Molecular Weight	193.03 g/mol
Synonyms	4,5-Dichloro-2-ethyl-1,2-dihydropyridazin-3-one; 4,5-Dichloro-2-ethyl-3(2H)-pyridazinone; 2-Ethyl-4,5-dichloro-3(2H)-pyridazinone; 4,5-Dichloro-2-ethylpyridazin-3(2H)-one; NSC 339063; 3(2H)-Pyridazinone, 4,5-dichloro-2-ethyl-
EINECS	Contact for details

Quality Control

Our 4,5-Dichloro-2-Ethyl-3(2H)-Pyridazinone is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity, identity, and consistency, meeting the stringent requirements of industrial and research applications. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are available upon request.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (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.