Description

Cycloocta[Def]Biphenylene is a polycyclic aromatic hydrocarbon (PAH) characterized by its unique fused ring structure. This compound is of significant interest in advanced materials research and organic electronics due to its potential as a building block for novel conjugated systems. It is primarily utilized by R&D chemists and material scientists working in the development of organic semiconductors, non-linear optical materials, and specialty ligands. The high-purity grade we supply ensures consistent performance and reliable results in sensitive synthetic applications.

Application

• Organic Semiconductor Precursor: Serves as a key intermediate in the synthesis of novel p-type or n-type organic semiconductor materials for transistors and photovoltaics.
• Non-Linear Optical (NLO) Materials: Used in research to develop new chromophores with enhanced second or third harmonic generation properties for photonic devices.
• Coordination Chemistry & Ligand Design: Acts as a rigid, planar scaffold for constructing sophisticated chelating ligands in catalysis and supramolecular chemistry.
• Polymer & Dendrimer Synthesis: Functions as a core unit or monomer for creating polymers and dendrimers with tailored electronic and optical characteristics.
• Chemical Research & Reference Standard: Employed in academic and industrial laboratories for fundamental studies on aromaticity, reactivity, and photophysics.
• Specialty Fine Chemical Intermediate: Used in the multi-step synthesis of complex molecules for pharmaceuticals and agrochemicals where its specific geometry is required.

Basic Information

Product Name	Cycloocta[Def]Biphenylene
CAS No.	36230-20-3
Molecular Formula	C20H12
Molecular Weight	252.31 g/mol
Synonyms	Cycloocta[def]biphenylene; Cycloocta[def]biphenylene (9CI); 1,2:5,6-Dibenzocyclooctatetraene; 1,2:5,6-Dibenzo-1,3,5,7-cyclooctatetraene; 1,2:5,6-Dibenzocycloocta-1,3,5,7-tetraene; 1,2:5,6-Dibenzo[8]annulene; [8]Annuleno[8]annulene (derivative); Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our Cycloocta[Def]Biphenylene is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity for research applications. Each lot undergoes comprehensive analytical characterization, including HPLC, NMR, and GC-MS, to verify identity and purity. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting all relevant specifications. We adhere to cGMP principles where applicable to support our clients' development and regulatory needs.

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). This material is light-sensitive and should be handled under an inert atmosphere when appropriate to prevent potential oxidation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to brown 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.