Description

4-Penten-2-One, 3-Bromo-4-Methyl- is a specialized brominated ketone building block of significant interest in advanced organic synthesis. Its unique structure, featuring both a reactive ketone group and an alkenyl bromide moiety, makes it a versatile intermediate for constructing complex molecular architectures. This compound is particularly valuable for researchers and process chemists in the pharmaceutical and agrochemical industries, where it is used to introduce key functional groups and chiral centers. The CAS number for this compound is 691006-95-8.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for introducing bromo-alkene functionalities.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides, leveraging its reactivity for carbon-carbon bond formation.
• Organic Synthesis Building Block: A valuable reagent for Michael additions, cross-coupling reactions (e.g., Suzuki, Heck), and cyclization reactions to form heterocyclic compounds.
• Material Science Research: Employed in the development of specialty polymers and functional organic materials with tailored properties.
• Academic & R&D Laboratories: Used as a model compound in methodological development and mechanistic studies in organic chemistry.
• Flavor & Fragrance Intermediate: Potential use in the synthesis of complex odorants and flavor molecules due to its ketone backbone.

Basic Information

Product Name	4-Penten-2-One, 3-Bromo-4-Methyl-
CAS No.	691006-95-8
Molecular Formula	C6H9BrO
Molecular Weight	177.04 g/mol
Synonyms	3-Bromo-4-methylpent-4-en-2-one; 3-Bromo-4-methyl-4-penten-2-one; 4-Methyl-3-bromo-4-penten-2-one; 4-Penten-2-one, 3-bromo-4-methyl-; (E/Z)-3-Bromo-4-methylpent-4-en-2-one
EINECS	Contact for details

Quality Control

Our 4-Penten-2-One, 3-Bromo-4-Methyl- is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatography (HPLC/GC) and spectroscopic methods (NMR, IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and can be tailored to meet specific customer requirements. We adhere to cGMP principles where applicable to support our clients in regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. Due to its light-sensitive nature and reactivity, it is recommended to store under an inert atmosphere for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 95.0% (Typical 97-98%)
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.