Description

5-Bromo-2-Ethyl-2H-Phthalazin-1-One is a high-purity brominated phthalazinone derivative, serving as a critical advanced intermediate in modern organic synthesis. Its value lies in providing a versatile halogenated scaffold for constructing complex molecules, particularly in the development of active pharmaceutical ingredients (APIs) and functional materials. This compound is essential for research and production chemists in the pharmaceutical, agrochemical, and specialty chemical industries who require reliable, high-quality building blocks for drug discovery and process chemistry.

Application

• Pharmaceutical Intermediate: A key building block for the synthesis of novel drug candidates, particularly in kinase inhibitor and other small-molecule therapeutic research.
• Agrochemical Synthesis: Used in the development of new herbicides, fungicides, and pesticides, leveraging its halogenated heterocyclic structure.
• Material Science Research: Serves as a precursor for organic electronic materials, such as charge-transport molecules or ligands for metal-organic frameworks (MOFs).
• Chemical Biology Probes: Utilized in the design and synthesis of molecular probes for studying biological pathways and enzyme functions.
• Custom Synthesis & Contract Manufacturing: A vital starting material for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) producing specialized compounds for clients.
• Academic & R&D Laboratories: Employed in university and institutional research for methodological studies in heterocyclic and cross-coupling chemistry.

Basic Information

Product Name	5-Bromo-2-Ethyl-2H-Phthalazin-1-One
CAS No.	1443292-18-9
Molecular Formula	C₁₀H₉BrN₂O
Molecular Weight	253.10 g/mol
Synonyms	5-Bromo-2-ethylphthalazin-1(2H)-one; 5-Bromo-2-ethyl-1,2-dihydrophthalazin-1-one; 5-Bromo-2-ethyl-1(2H)-phthalazinone; 2-Ethyl-5-bromophthalazin-1-one; 1(2H)-Phthalazinone, 5-bromo-2-ethyl-; 1443292-18-9; 5-Bromo-2-ethylphthalazinone
EINECS	Contact for details

Quality Control

Our 5-Bromo-2-Ethyl-2H-Phthalazin-1-One is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all critical quality attributes. Our production adheres to cGMP principles where applicable, ensuring reliability for research and scale-up activities.

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). Keep away from incompatible materials such as strong oxidizing agents. The container should be kept tightly sealed to protect from moisture.

Specification

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