Description

Benzoic Acid, 4,4'-(1,4-Phenylenedi-2,1-Ethynediyl)Bis- is a specialized organic compound featuring a conjugated molecular structure with ethynylene and phenylene linkers. This compound matters for its role as a key building block or intermediate in advanced material synthesis, offering unique electronic and structural properties. It is needed by research institutions and industrial manufacturers in the fields of organic electronics, polymer chemistry, and pharmaceutical development.

Application

• Organic Semiconductor Precursor: Serves as a critical intermediate in the synthesis of conjugated polymers and small molecules for OLEDs, OFETs, and photovoltaic cells.
• Pharmaceutical Intermediate: Used in the research and development of novel active pharmaceutical ingredients (APIs) with complex aromatic architectures.
• Liquid Crystal & Advanced Material Synthesis: Acts as a rigid, linear building block for creating novel liquid crystal compounds and high-performance polymers.
• Coordination Chemistry & Ligand Design: Employed in the development of metal-organic frameworks (MOFs) and catalytic complexes due to its potential chelating sites.
• Research & Development (R&D): Utilized in academic and industrial labs for fundamental studies in organic synthesis and material science.

Basic Information

Product Name	Benzoic Acid, 4,4'-(1,4-Phenylenedi-2,1-Ethynediyl)Bis-
CAS No.	217077-89-9
Molecular Formula	C24H14O4
Molecular Weight	366.37 g/mol
Synonyms	4,4'-(1,4-Phenylenediethynylene)dibenzoic acid; 1,4-Bis(4-carboxyphenylethynyl)benzene; p,p'-(1,4-Phenylenedi-2,1-ethynediyl)bis[benzoic acid]; BPEB; Diethynylbenzene-dibenzoic acid derivative; [1,1':4',1''-Terphenyl]-4,4''-dicarboxylic acid, 5',6'-diethynyl-; 5',6'-Diethynyl-[1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid
EINECS	Contact for details

Quality Control

Our Benzoic Acid, 4,4'-(1,4-Phenylenedi-2,1-Ethynediyl)Bis- is produced and handled under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and elemental analysis, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical specifications are available upon request to support your R&D and quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95% (Typical 97-99%)
Melting Point	Contact for details
Loss on Drying	≤ 1.0 %
Heavy Metals	< 20 ppm

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