Description

4,4'-Dibromo-Stilbene is a high-purity brominated aromatic compound, a key intermediate in advanced organic synthesis. Its rigid, conjugated structure makes it a valuable building block for the development of specialized materials with specific optical and electronic properties. This product is essential for R&D and production in the pharmaceutical, agrochemical, and advanced polymer industries, where precise molecular architecture is required.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of active pharmaceutical ingredients (APIs) and other complex organic molecules.
• Agrochemical Synthesis: Used in the development of novel crop protection agents and herbicides.
• Organic Light-Emitting Diodes (OLEDs): Acts as a building block for electron-transport materials or host materials in OLED displays and lighting.
• Liquid Crystal (LC) Materials: Employed in the synthesis of components for liquid crystal displays due to its rigid, linear structure.
• Polymer & Resin Modifier: Used to introduce bromine functionality and enhance flame retardancy or other properties in specialty polymers.
• Fluorescent Dyes & Probes: Functions as a core structure in the design of fluorescent markers and sensors for analytical and biological applications.
• Cross-Coupling Reactions: A valuable substrate in palladium-catalyzed reactions (e.g., Suzuki, Heck) for constructing complex biaryl systems.
• Academic & Industrial R&D: A key reagent for research in organic chemistry, materials science, and chemical engineering.

Basic Information

Product Name	4,4'-Dibromo-Stilbene
CAS No.	2765-14-2
Molecular Formula	C14H10Br2
Molecular Weight	338.04 g/mol
Synonyms	trans-1,2-Bis(4-bromophenyl)ethene; (E)-1,2-Bis(4-bromophenyl)ethene; 4,4'-Dibromostilbene; p,p'-Dibromostilbene; trans-4,4'-Dibromostilbene; Stilbene, 4,4'-dibromo-; NSC 404088; 1,1'-(E)-Ethene-1,2-diylbis(4-bromobenzene)
EINECS	220-429-7

Quality Control

Our 4,4'-Dibromo-Stilbene is manufactured under strict quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation (IR, NMR), to ensure it meets the high standards required for sensitive synthetic applications. Certificates of Analysis (COA) detailing all specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	218 - 222 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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