Description

4-Ethenylcyclooctene is a specialized, high-value cyclic olefin monomer with a unique eight-membered ring structure incorporating both an internal and a terminal double bond. This molecular architecture makes it a versatile and reactive intermediate for advanced polymer synthesis and fine chemical manufacturing. It is primarily sought after by research and development teams in the pharmaceutical, agrochemical, and advanced materials sectors for creating novel polymers with tailored properties, as well as for use in organic synthesis as a building block for complex molecules.

Application

• Advanced Polymer Synthesis: Key monomer for the production of specialty cyclic olefin copolymers (COCs) and polymers with enhanced optical clarity, chemical resistance, and thermal stability.
• Pharmaceutical Intermediates: Serves as a crucial building block in the synthesis of complex, biologically active molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Development: Used in the research and production of novel crop protection agents and herbicides.
• Material Science Research: Employed in the development of new polymeric materials, coatings, and adhesives with specific performance characteristics.
• Organic Synthesis & Catalysis: Acts as a substrate in metathesis reactions and other catalytic processes to construct complex organic frameworks.
• Crosslinking Agent: Potential use in formulating specialty resins and elastomers requiring specific crosslink density and properties.

Basic Information

Item	Detail
Product Name	4-Ethenylcyclooctene
CAS No.	1124-45-4
Molecular Formula	C10H16
Molecular Weight	136.24 g/mol
Synonyms	4-Vinylcyclooctene; 4-Vinyl-1-cyclooctene; Cyclooctene, 4-ethenyl-; 1,2,3,4,5,6,7,8-Octahydro-4-vinylnaphthalene; 4-Vinylcyclooct-1-ene; 4-Ethenyl-1-cyclooctene
EINECS	214-393-7

Quality Control

Our 4-Ethenylcyclooctene is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including Gas Chromatography (GC) and Nuclear Magnetic Resonance (NMR) spectroscopy, to verify identity, purity, and impurity profiles. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting all critical quality attributes. We are committed to meeting the exacting standards required for research and industrial-scale applications.

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 area. Due to its highly volatile and easily oxidized nature, the container must be kept tightly sealed when not in use and away from heat, sparks, and open flames. Recommended long-term storage temperature is 2-8°C.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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