Description

4-Chloro-3(2H)-Pyridazinone is a versatile heterocyclic building block and key synthetic intermediate in organic chemistry. Its chlorinated pyridazinone core is highly valuable for constructing more complex molecules with specific biological activities. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for the development of new active ingredients.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of various drug candidates, particularly those targeting cardiovascular and central nervous system disorders.
• Agrochemical Synthesis: Used in the research and production of herbicides, fungicides, and insecticides, leveraging its heterocyclic structure for bioactivity.
• Chemical Research & Development: Serves as a fundamental building block for novel heterocyclic compounds in academic and industrial R&D laboratories.
• Material Science: Investigated for the preparation of specialized polymers and organic electronic materials due to its molecular architecture.

Basic Information

Product Name	4-Chloro-3(2H)-Pyridazinone
CAS No.	1677-79-8
Molecular Formula	C4H3ClN2O
Molecular Weight	130.53 g/mol
Synonyms	4-Chloro-3(2H)-pyridazinone; 4-Chloro-2,3-dihydropyridazin-3-one; 4-Chloro-3-pyridazinol; 4-Chloro-3-hydroxypyridazine; 3-Hydroxy-4-chloropyridazine; 4-Chloro-1,2-dihydro-3H-pyridazin-3-one; 4-Chloro-3-pyridazinone; 4-Chloro-1,2-dihydropyridazine-3-one
EINECS	216-828-6

Quality Control

Our 4-Chloro-3(2H)-Pyridazinone is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee compliance with your research and production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong bases and oxidizing agents. For long-term storage, consider under an inert atmosphere to maintain optimal stability.

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.