Description

4-Bromo-2-pentene is a versatile halogenated alkene intermediate of significant importance in advanced organic synthesis. Its primary value lies in its reactivity as an electrophilic alkylating agent and as a building block for constructing more complex molecular architectures. This compound is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to introduce pentene and bromo-functional groups into target molecules.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs) and investigational new drugs.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents.
• Organic Synthesis Reagent: Serves as an electrophile in coupling reactions (e.g., Suzuki, Heck) and in nucleophilic substitution reactions.
• Ligand and Catalyst Preparation: A precursor for synthesizing specialized ligands used in transition metal catalysis.
• Material Science Research: Employed in the development of novel polymers and functional organic materials.
• Fine Chemical Production: Intermediate for flavors, fragrances, and other high-value specialty chemicals.

Basic Information

Product Name	4-Bromo-2-pentene
CAS No.	1809-26-3
Molecular Formula	C5H9Br
Molecular Weight	149.03 g/mol
Synonyms	2-Pentene, 4-bromo-; 4-Bromo-2-pentene (cis- and trans- mixture); 4-Bromopent-2-ene; (E/Z)-4-Bromo-2-pentene; 1-Bromo-3-methyl-2-butene
EINECS	217-322-7

Quality Control

Our 4-Bromo-2-pentene is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including GC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee compliance with your research and production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and bases. Recommended storage temperature is 2-8°C for extended stability. Keep container tightly sealed when not in use to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0% (typical 98-99%)
Isomer Ratio (cis/trans)	Typically supplied as mixture
Water Content (KF)	≤ 0.5%

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