Description

1,3,5,7-Cyclooctatetraene (CAS NO 629-20-9) is a fundamental non-aromatic cyclic hydrocarbon with a tub-shaped conformation, serving as a key building block in advanced organic synthesis. Its unique structure and high degree of unsaturation make it an invaluable precursor for creating complex molecular architectures, including polymers, ligands, and specialty chemicals. This compound is essential for R&D and production in the pharmaceutical, agrochemical, and materials science industries, where it is used to develop novel catalysts, electronic materials, and fine chemical intermediates.

Application

• Organic Synthesis Intermediate: A versatile precursor for the synthesis of cyclooctatetraene derivatives, complex organic ligands, and strained ring systems.
• Polymer & Material Science: Used in the development of conductive polymers, specialty coatings, and novel organic electronic materials due to its π-electron system.
• Pharmaceutical Research: Serves as a key scaffold in medicinal chemistry for the discovery and development of new active pharmaceutical ingredients (APIs).
• Catalyst & Ligand Preparation: Employed in the manufacture of organometallic catalysts and complexing agents for transition metals.
• Agrochemical Development: Acts as an intermediate in the synthesis of advanced crop protection agents and specialty herbicides.
• Academic & Industrial R&D: A critical reagent for fundamental research in organic chemistry, photochemistry, and theoretical studies.

Basic Information

Product Name	1,3,5,7-Cyclooctatetraene
CAS No.	629-20-9
Molecular Formula	C8H8
Molecular Weight	104.15 g/mol
Synonyms	COT; Cyclooctatetraene; [8]Annulene; 1,3,5,7-Cyclooctatetraene; Benzene, 1,2:5,6-dibicyclo[2.2.0]hexa-2,5-diene; UN 2351 (when regulated)
EINECS	211-071-5

Quality Control

Our 1,3,5,7-Cyclooctatetraene is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including purity assay and impurity profiling, to ensure it meets the high standards required for research and industrial applications. A Certificate of Analysis (COA) detailing specific results for identity, purity, and related substances is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended storage temperature is 2-8°C to minimize degradation and polymerization. Keep away from heat, sparks, open flames, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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