Description

4,5-Dichloropyridazine Hydrochloride is a high-purity, halogenated heterocyclic building block essential for advanced organic synthesis. This compound matters as a versatile intermediate for constructing complex molecular architectures, particularly in the development of active pharmaceutical ingredients (APIs) and agrochemicals. It is primarily needed by research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for creating novel compounds with targeted biological activity.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of novel drug candidates, particularly for kinase inhibitors and other small-molecule therapeutics.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides, leveraging the pyridazine core for bioactivity.
• Chemical Research & Development: Serves as a versatile building block in medicinal chemistry for structure-activity relationship (SAR) studies and library synthesis.
• Material Science Precursor: Potential use in the synthesis of specialized ligands for catalysis or functional materials.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for scale-up and commercial production processes.

Basic Information

Product Name	4,5-Dichloropyridazine Hydrochloride
CAS No.	1245644-88-5
Molecular Formula	C4H3Cl2N2•HCl
Molecular Weight	199.45 g/mol (Free base: 163.99 g/mol)
Synonyms	4,5-Dichloropyridazine HCl; 4,5-Dichloro-1,2-diazine Hydrochloride; 4,5-Dichloropyridazinium Chloride; Pyridazine, 4,5-dichloro-, hydrochloride; 4,5-DCPDZ•HCl
EINECS	Contact for details

Quality Control

Our 4,5-Dichloropyridazine Hydrochloride is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for advanced synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee supply reliability and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere after opening to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
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.