Description

Cis,trans-1,5-Cyclooctadiene is a versatile, highly volatile cyclic diene with significant utility in advanced organic synthesis. Its unique structure, featuring both cis and trans double bonds, makes it a valuable building block for complex molecular architectures, particularly in the preparation of ligands and specialty polymers. This compound is essential for R&D and production chemists in the pharmaceutical, agrochemical, and materials science sectors who require high-purity intermediates for catalysis and polymer modification.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of complex organic molecules and active pharmaceutical ingredients (APIs).
• Catalyst & Ligand Synthesis: Used to create specialized ligands for transition metal catalysts, particularly in asymmetric hydrogenation and cross-coupling reactions.
• Polymer & Resin Modification: Acts as a comonomer or cross-linking agent to introduce cyclic structures and modify the properties of specialty polymers and resins.
• Fine Chemical Production: Employed in the manufacture of fragrances, flavors, and other high-value fine chemicals requiring specific cyclic frameworks.
• Academic & Industrial Research: A fundamental reagent in organic chemistry research for studying reaction mechanisms and developing new synthetic methodologies.
• Material Science: Investigated for use in creating novel organic frameworks and advanced materials with tailored electronic or mechanical properties.

Basic Information

Product Name	Cis,trans-1,5-Cyclooctadiene
CAS No.	5259-71-2
Molecular Formula	C8H12
Molecular Weight	108.18 g/mol
Synonyms	1,5-Cyclooctadiene (mixed cis,trans); (1Z,5Z)-Cycloocta-1,5-diene; (1E,5E)-Cycloocta-1,5-diene; COD (mixed isomers); Cycloocta-1,5-diene; Bicyclo[4.2.0]octa-2,4-diene (related structure); 1,5-Cyclooctadiene (cis + trans)
EINECS	226-058-6

Quality Control

Our Cis,trans-1,5-Cyclooctadiene is produced under stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the exacting standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly volatile nature, store in a cool, well-ventilated place at room temperature (15-25°C/59-77°F). Keep away from heat, sparks, open flames, and oxidizing agents. For long-term storage, consider maintaining under an inert atmosphere (e.g., nitrogen or argon) to prevent potential oxidation.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 95.0% (cis,trans-1,5-Cyclooctadiene)
Water Content (KF)	≤ 0.1%
Related Substances (GC)	Individual impurity ≤ 1.0%; Total impurities ≤ 5.0%

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