Description

4-Bromoethylbenzene is a versatile brominated aromatic compound, also known as 1-Bromo-4-ethylbenzene, serving as a critical building block in advanced organic synthesis. Its value lies in the reactive bromine atom, which enables efficient cross-coupling reactions and functional group transformations essential for creating complex molecular architectures. This intermediate is particularly vital for researchers and manufacturers in the pharmaceutical, agrochemical, and liquid crystal industries, where precise chemical modification is required.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs) and novel drug candidates via Suzuki-Miyaura and other palladium-catalyzed cross-couplings.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and pesticides, where the ethylbenzene core provides specific biological activity.
• Liquid Crystal Materials: Serves as a starting material for synthesizing mesogenic compounds used in display technologies.
• Organic Light-Emitting Diodes (OLEDs): Building block for creating charge-transport or emissive layers in electronic materials.
• Polymer Modification: Employed to introduce aromatic bromine functionalities into polymer chains for further customization.
• Chemical Research & Development: A valuable reagent in academic and industrial R&D labs for exploring new synthetic pathways and material properties.

Basic Information

Product Name	4-Bromoethylbenzene
CAS No.	1585-07-5
Molecular Formula	C8H9Br
Molecular Weight	185.06 g/mol
Synonyms	1-Bromo-4-ethylbenzene; p-Bromoethylbenzene; 4-Ethylbromobenzene; (4-Bromophenyl)ethane; p-Ethylbromobenzene; 4-Ethylphenyl bromide; 4-Bromo-1-ethylbenzene; NSC 9248
EINECS	216-433-6

Quality Control

Our 4-Bromoethylbenzene is produced under stringent 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 adhere to cGMP principles where applicable to support our customers 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 materials such as strong oxidizing agents and bases. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	1.35 - 1.38 g/mL
Refractive Index (n20D)	1.548 - 1.552

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