Description

4-Bromostyrene is a versatile brominated aromatic monomer with the CAS number 2039-82-9, serving as a crucial building block in advanced organic synthesis. Its reactive vinyl group and bromine substituent make it an essential precursor for creating polymers and fine chemicals with tailored properties. This high-purity intermediate is primarily sought by R&D laboratories and industrial manufacturers in the pharmaceutical, agrochemical, and specialty polymer sectors for developing new materials and active compounds.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the development of advanced pesticides, herbicides, and plant growth regulators.
• Polymer & Material Science: Serves as a monomer for producing specialty polymers, including functionalized polystyrene and liquid crystal polymers (LCPs).
• Organic Light-Emitting Diodes (OLEDs): A building block for synthesizing brominated aromatic compounds used in electron-transport or emissive layers.
• Cross-Coupling Reactions: An excellent substrate for Suzuki, Heck, and other palladium-catalyzed cross-coupling reactions to form complex biaryl structures.
• Chemical Research & Development: Employed in academic and industrial R&D for exploring new organic reactions and material properties.

Basic Information

Product Name	4-Bromostyrene
CAS No.	2039-82-9
Molecular Formula	C8H7Br
Molecular Weight	183.05 g/mol
Synonyms	1-Bromo-4-ethenylbenzene; p-Bromostyrene; 4-Bromophenylethylene; (4-Bromophenyl)ethylene; Styrene, p-bromo-; Vinyl-4-bromobenzene; NSC 9246; BR-STY
EINECS	218-015-8

Quality Control

Our 4-Bromostyrene is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including GC, HPLC, and NMR, to ensure high purity and consistency. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications. We support cGMP and ISO standards for pharmaceutical and industrial applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from heat, sparks, and open flames. Due to its light-sensitive nature, prolonged exposure to light should be avoided to maintain product stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC)	Total impurities ≤ 2.0%
Density (at 20°C)	~1.42 g/mL
Refractive Index (n20D)	~1.595

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