Description

Benzene, 1,4-Diethynyl-2,5-Difluoro- (9Ci) is a specialized fluorinated and ethynyl-substituted aromatic building block. This compound is valued for its unique molecular architecture, which combines electron-withdrawing fluorine atoms with reactive ethynyl groups, making it a critical intermediate in advanced material synthesis. It is primarily sought by researchers and manufacturers in the pharmaceutical, agrochemical, and organic electronics sectors for developing novel compounds, polymers, and functional materials. The CAS number for this product is 156016-23-8.

Application

This high-value chemical intermediate enables innovation across several advanced technology fields. Its primary applications include:

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for targeted therapies.
• Agrochemical Synthesis: Used in creating novel herbicides, fungicides, and pesticides with enhanced efficacy and environmental profiles.
• Organic Semiconductor Materials: A crucial building block for π-conjugated systems in organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and field-effect transistors (OFETs).
• Liquid Crystal & Polymer Chemistry: Incorporated into the backbone of specialty polymers and liquid crystal displays (LCDs) to modify thermal and electronic properties.
• Metal-Organic Framework (MOF) Precursor: Utilized as a ligand or linker in the construction of advanced porous materials for gas storage and catalysis.
• Cross-Coupling Reactions: Acts as a versatile substrate in Sonogashira, Heck, and other palladium-catalyzed cross-coupling reactions to create complex molecular architectures.

Basic Information

Product Name	Benzene, 1,4-Diethynyl-2,5-Difluoro- (9Ci)
CAS No.	156016-23-8
Molecular Formula	C10H4F2
Molecular Weight	162.14 g/mol
Synonyms	1,4-Diethynyl-2,5-difluorobenzene; 2,5-Difluoro-1,4-diethynylbenzene; p-Diethynyl-difluorobenzene; 1,4-Bis(ethynyl)-2,5-difluorobenzene; DFDEB; Difluorodiacetylene benzene
EINECS	Contact for details

Quality Control

We maintain stringent quality control protocols for all our fine chemical intermediates. Each batch of Benzene, 1,4-Diethynyl-2,5-Difluoro- is analyzed using advanced techniques including HPLC, GC-MS, and NMR to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment. Our quality management system is designed to meet the exacting standards required for research and commercial scale-up.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at controlled room temperature (15-25°C) in a cool, dry, well-ventilated place. This compound is light-sensitive and easily oxidized; prolonged exposure to air or light may lead to decomposition. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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