Description

4-Amino-5-Chloro-3(2H)-Pyridazinone is a high-purity heterocyclic organic compound that serves as a critical pharmaceutical intermediate and versatile building block in organic synthesis. Its value lies in its unique pyridazinone core, which is essential for constructing molecules with significant biological activity. This compound is primarily needed by research institutions and manufacturers in the pharmaceutical, agrochemical, and fine chemical industries for the development of new active ingredients.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those targeting the central nervous system and cardiovascular diseases.
• Agrochemical Research: Building block for developing novel herbicides, fungicides, and plant growth regulators.
• Organic Synthesis: Versatile reagent for constructing complex heterocyclic compounds in medicinal and process chemistry.
• Biochemical Research: Used in life science research for studying enzyme inhibition and receptor binding.
• Material Science: Potential monomer or additive in the development of specialty polymers and advanced materials.

Basic Information

Product Name	4-Amino-5-Chloro-3(2H)-Pyridazinone
CAS No.	55271-58-4
Molecular Formula	C4H4ClN3O
Molecular Weight	145.55 g/mol
Synonyms	5-Chloro-4-amino-2,3-dihydropyridazin-3-one; 4-Amino-5-chloro-2,3-dihydropyridazin-3-one; 5-Chloro-4-aminopyridazin-3(2H)-one; 4-Amino-5-chloropyridazin-3(2H)-one; ACPO; 4-Amino-5-chloro-3-pyridazinone
EINECS	Contact for details

Quality Control

Our 4-Amino-5-Chloro-3(2H)-Pyridazinone is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for pharmaceutical intermediate applications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect stability and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 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.