Description

5-(Benzylsulfonyl)-4-Bromo-2-Methyl-2,3-Dihydropyridazin-3-One is a specialized heterocyclic building block of significant interest in advanced organic synthesis. This compound matters as a key intermediate for constructing complex molecular architectures, particularly in pharmaceutical research and development. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries for creating novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and inflammatory diseases.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides, leveraging its unique heterocyclic core for bioactivity.
• Chemical Biology Probe: Acts as a scaffold for creating tool compounds to study enzyme function and biological pathways in academic and industrial research settings.
• Material Science: Potential building block for advanced organic electronic materials and specialty polymers due to its sulfonyl and heterocyclic functionalities.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for client-specific synthesis projects requiring high-purity intermediates.

Basic Information

Product Name	5-(Benzylsulfonyl)-4-Bromo-2-Methyl-2,3-Dihydropyridazin-3-One
CAS No.	97120-13-3
Molecular Formula	C12H11BrN2O3S
Molecular Weight	343.20 g/mol
Synonyms	4-Bromo-2-methyl-5-(phenylmethylsulfonyl)-2,3-dihydropyridazin-3-one; 4-Bromo-2-methyl-5-(benzylsulfonyl)-2H-pyridazin-3-one; 5-(Benzylsulfonyl)-4-bromo-2-methyl-2,3-dihydropyridazin-3-one; 97120-13-3; 4-Bromo-2-methyl-5-[(phenylmethyl)sulfonyl]-2,3-dihydropyridazin-3-one
EINECS	Contact for details

Quality Control

Our 5-(Benzylsulfonyl)-4-Bromo-2-Methyl-2,3-Dihydropyridazin-3-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with detailed chromatographic and spectroscopic data, including HPLC purity, NMR, and mass spectrometry confirmation, to support your regulatory and R&D documentation needs.

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). Keep away from incompatible materials such as strong bases and reducing agents. For long-term storage, consider an inert atmosphere to ensure optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
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.