cis-Cyclooctene
cis-Cyclooctene (CAS: 931-87-3) is an unsaturated cyclic hydrocarbon with the chemical formula C8H14 and a molecular weight of 110.20 g/mol. This alkene is supplied by Tech Serve Solutions as a building block for organic synthesis and chemical research. Its unique cyclic structure makes it a valuable reagent in various chemical transformations and studies, including surface science investigations.

Surface Science Studies
cis-Cyclooctene has been utilised in experimental studies investigating the chemisorption of alkenes on silicon surfaces. These studies often employ techniques like scanning tunneling microscopy to understand surface interactions at a molecular level.
Organic Synthesis Building Block
As a cyclic alkene, cis-Cyclooctene serves as a versatile building block in organic synthesis. It can participate in a variety of reactions, enabling the construction of more complex molecular architectures.
Chemical Research Reagent
This compound is employed in chemical research laboratories as a reagent for exploring novel reaction pathways and developing new synthetic methodologies. Its specific structure offers unique reactivity profiles.
| Molecular weight | 110.20 |
|---|---|
| Empirical formula | C8H14 |
| Assay | 95% |
| Boiling point | 145-146 °C(lit.) |
| Density | 0.846 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.469(lit.) |
| Solubility | H2O: insoluble |
| Melting point | −16 °C(lit.) |
| Contains / stabiliser | 100-200 ppm Irganox 1076 FD as antioxidant |
| Application | cis-Cyclooctene has been used to study the alkenes chemisorbed on silicon(100) by scanning tunneling microscopy1. |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 25 °C / 77 °F |
| Transport (UN / ADR) | UN 3295C 3 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Risk statements (R) | 10 |
| Safety statements (S) | 29-33 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is cis-Cyclooctene used for?
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cis-Cyclooctene is used as a building block in organic synthesis and for research purposes, including studies of alkenes chemisorbed on silicon surfaces.
What is the CAS number and formula for cis-Cyclooctene?
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The CAS number for cis-Cyclooctene is 931-87-3, and its chemical formula is C8H14.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies cis-Cyclooctene with an assay of 95%. This product is not represented as USP, BP, EP, or pharmacopoeia grade.
How should cis-Cyclooctene be handled safely?
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cis-Cyclooctene is a flammable liquid and vapour (H226). Handle with appropriate personal protective equipment, including eyeshields and chemical-resistant gloves, in a well-ventilated area. Avoid heat, sparks, and open flames.
Is cis-Cyclooctene a controlled substance?
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The provided data does not indicate that cis-Cyclooctene is a controlled substance.
How is cis-Cyclooctene packed and shipped?
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cis-Cyclooctene is packed and shipped according to international regulations for hazardous materials, including UN 3295C, Class 3, Packing Group III.
How can I request a sample or quote for cis-Cyclooctene?
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Please contact the Tech Serve Solutions sales team through our website or by phone to request a sample or a quotation for cis-Cyclooctene.
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