Description

3-Bromo-2-pentene is a versatile halogenated alkene intermediate with the CAS registry number 21964-23-8. This compound is valued for its reactivity as an electrophilic building block in organic synthesis, enabling the introduction of the bromoalkene functional group. It is primarily utilized by research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the synthesis of active pharmaceutical ingredients (APIs) and investigational new drugs.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and fungicides as a reactive alkylating agent.
• Organic Synthesis Building Block: Employed in cross-coupling reactions (e.g., Suzuki, Heck) and nucleophilic substitution reactions to form carbon-carbon bonds.
• Material Science Research: Acts as a monomer or precursor in the development of novel polymers and functional materials.
• Chemical Research & Development: Utilized in academic and industrial R&D labs for method development and exploring new synthetic pathways.
• Flavor & Fragrance Industry: Potential intermediate for the synthesis of specific aroma compounds.

Basic Information

Product Name	3-Bromo-2-pentene
CAS No.	21964-23-8
Molecular Formula	C5H9Br
Molecular Weight	149.03 g/mol
Synonyms	2-Pentene, 3-bromo-; (E)-3-Bromo-2-pentene; (Z)-3-Bromo-2-pentene; 3-Bromopent-2-ene; 3-Bromo-2-pentene (mixed isomers); Bromopentene
EINECS	Contact for details

Quality Control

Our 3-Bromo-2-pentene is produced and handled under a strict quality management system. Each batch undergoes comprehensive analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (NMR, IR), to ensure identity, purity, and consistency. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee it meets your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated place away from heat, sparks, and open flame. Due to its highly volatile nature and reactivity as a strong acid/organic solvent, it should be kept separate from incompatible materials such as strong oxidizing agents and bases. Recommended storage temperature: 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0% (Isomer mixture)
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~1.33 g/mL
Boiling Point	~125-130°C
Refractive Index (n20D)	~1.47-1.49

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