Description

Benzene, 1,4-Dibromo-2,5-Diethynyl- is a specialized, high-value organic building block characterized by its unique combination of bromine substituents and ethynyl (acetylene) functional groups. This compound matters for its role as a critical precursor in advanced materials science, enabling the synthesis of complex molecular architectures through cross-coupling and polymerization reactions. It is primarily needed by R&D chemists and process engineers in the pharmaceutical, agrochemical, and organic electronics industries for developing novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the construction of complex drug candidates, particularly those requiring rigid, conjugated frameworks.
• Agrochemical Synthesis: Used in the research and development of new herbicides and pesticides, where the bromine atoms offer sites for further functionalization.
• Organic Semiconductor Precursor: A vital building block for π-conjugated polymers and small molecules used in Organic Light-Emitting Diodes (OLEDs) and Organic Photovoltaics (OPVs).
• Metal-Organic Framework (MOF) Linker: The ethynyl groups can act as coordination sites or be used in "click chemistry" to construct porous, functional materials.
• Liquid Crystal Research: Employed in the synthesis of novel liquid crystal compounds due to its linear, rigid backbone.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the production of specialty polymers with tailored electronic or mechanical properties.
• Chemical Research & Development: A versatile reagent for exploring new synthetic methodologies, including Sonogashira and Suzuki-Miyaura cross-coupling reactions.

Basic Information

Product Name	Benzene, 1,4-Dibromo-2,5-Diethynyl-
CAS No.	478190-80-6
Molecular Formula	C10H4Br2
Molecular Weight	291.95 g/mol
Synonyms	1,4-Dibromo-2,5-diethynylbenzene; 2,5-Diethynyl-1,4-dibromobenzene; 1,4-Dibromo-2,5-bis(ethynyl)benzene; p-Dibromo-diethynylbenzene; DEDB; DBDEB; 478190-80-6 (CAS Index Name)
EINECS	Contact for details

Quality Control

Our Benzene, 1,4-Dibromo-2,5-Diethynyl- is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing to ensure high purity and consistency, meeting the stringent requirements of research and process development. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Keep away from strong oxidizers. For long-term storage, consider under an inert atmosphere (e.g., nitrogen or argon) to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Heavy Metals	< 20 ppm
Residual Solvents (GC)	Complies with ICH guidelines

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