Description

Pyridazine, 4,5-Dichloro- (9Ci) is a high-purity, halogenated heterocyclic compound serving as a critical building block in advanced organic synthesis. Its value lies in its role as a versatile intermediate for constructing complex molecular architectures, particularly in the development of active pharmaceutical ingredients (APIs) and agrochemicals. This compound is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to introduce the dichloropyridazine moiety into target molecules.

Application

• Pharmaceutical Intermediate: A key synthon for the synthesis of novel drug candidates, particularly in medicinal chemistry programs targeting kinase inhibitors and other biologically active heterocycles.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and insecticides, where the pyridazine core contributes to biological activity.
• Material Science Research: Serves as a precursor for the development of organic electronic materials, ligands for catalysis, and functional polymers.
• Chemical Research & Development: Employed in academic and industrial R&D labs for method development, cross-coupling reactions, and as a scaffold for library synthesis in drug discovery.
• Fine Chemical Production: Acts as a building block for the manufacture of dyes, pigments, and other specialty fine chemicals requiring specific halogenated heterocyclic structures.

Basic Information

Product Name	Pyridazine, 4,5-Dichloro- (9Ci)
CAS No.	55271-49-3
Molecular Formula	C4H2Cl2N2
Molecular Weight	148.98 g/mol
Synonyms	4,5-Dichloropyridazine; 4,5-Dichloro-1,2-diazine; 1,2-Diazine, 4,5-dichloro-; NSC 163063; 4,5-Dichloro-1,2-diazabenzene; Dichloropyridazine; 4,5-DCPD
EINECS	Contact for details

Quality Control

Every batch of 4,5-Dichloropyridazine is produced and tested under a strict quality management system to ensure consistency and reliability for your synthetic applications. We employ advanced analytical techniques including HPLC, GC, and NMR to verify identity, purity, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider storing under 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.