Description

Benzene, 2-Bromo-1-Ethynyl-4-Fluoro- is a high-purity, multi-functional halogenated aromatic building block of significant interest in advanced organic synthesis. Its unique molecular architecture, featuring bromo, fluoro, and ethynyl substituents, makes it a versatile intermediate for constructing complex molecules with precise electronic and steric properties. This compound is primarily utilized by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and materials science sectors for creating novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: A key synthon for the development of novel active pharmaceutical ingredients (APIs), particularly in kinase inhibitor and CNS drug discovery programs.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and pesticides, leveraging the fluorine atom for enhanced bioactivity and metabolic stability.
• Material Science Precursor: Serves as a monomer or cross-linking agent in the synthesis of specialty polymers, liquid crystals, and organic electronic materials.
• Cross-Coupling Reactions: The bromo and ethynyl groups are excellent handles for Suzuki, Sonogashira, and other palladium-catalyzed cross-coupling reactions to build complex biaryl and conjugated systems.
• Click Chemistry: The terminal alkyne functionality is ideal for copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions, a cornerstone of bioconjugation and chemical biology.
• Fluorinated Compound Library Synthesis: An essential building block for medicinal chemistry teams constructing diverse compound libraries to explore structure-activity relationships (SAR).

Basic Information

Product Name	Benzene, 2-Bromo-1-Ethynyl-4-Fluoro-
CAS No.	1057670-01-5
Molecular Formula	C8H4BrF
Molecular Weight	199.02 g/mol
Synonyms	2-Bromo-1-ethynyl-4-fluorobenzene; 1-Bromo-2-ethynyl-5-fluorobenzene; 4-Fluoro-2-bromophenylacetylene; 2-Bromo-4-fluorophenylacetylene; 5-Fluoro-2-bromophenylacetylene; 2-Bromo-4-fluoroethynylbenzene; (2-Bromo-4-fluorophenyl)ethyne
EINECS	Contact for details

Quality Control

Every batch of Benzene, 2-Bromo-1-Ethynyl-4-Fluoro- is produced and tested under a strict quality management system. We ensure high purity and batch-to-batch consistency through comprehensive analytical techniques including HPLC, GC, NMR, and mass spectrometry. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming identity, purity, and impurity profiles. Our quality protocols are designed to meet the stringent requirements of cGMP and ISO 9001 standards for advanced chemical intermediates.

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). The compound is light-sensitive and should be handled under an inert atmosphere when appropriate for prolonged use. Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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