Cyclooctanone
Cyclooctanone (CAS: 502-49-8), with the molecular formula C8H14(=O) and a molecular weight of 126.20 g/mol, is a cyclic ketone. This compound is primarily utilised as a versatile building block in organic synthesis. It serves as a key intermediate for the preparation of various complex molecules, including sulfonylbicycloalkanols and lactones, underscoring its importance in chemical research and development.

Synthesis of Sulfonylbicycloalkanols
Cyclooctanone is employed in the preparation of sulfonylbicyclo[3.2.0]heptan-1-ols, sulfonylbicyclo[5.2.0]nonan-1-ols, and sulfonylbicyclo[6.2.0]decan-1-ols, facilitating the creation of novel cyclic structures.
Preparation of Lactones
This ketone serves as a precursor in the synthesis of 14-membered lactones, a class of compounds significant in various fields of chemistry.
Organic Building Block
As a C7 to C8 carbonyl compound and ketone, cyclooctanone functions as a fundamental building block in organic synthesis, enabling the construction of more complex molecular architectures.
| Molecular weight | 126.20 |
|---|---|
| Linear formula | C8H14(=O) |
| Assay | ≥95.0% (GC) |
| Grade | purum |
| Boiling point | 195-197 °C(lit.) |
| Density | 0.958 g/mL at 25 °C(lit.) |
| Solubility | methanol: soluble1 g/10 mL, clear to very faintly turbid, colorless |
| Melting point | 32-41 °C(lit.) |
| Application | Cyclooctanone has been used in the preparation of:• sulfonylbicyclo[3.2.0]heptan-1-ols, sulfonylbicyclo[5.2.0]-nonan-1-ols and sulfonylbicyclo[6.2.0]decan-1-ols1• 14-membered lactones2 |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Flash point | 73 °C / 163.4 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38-52/53 |
| Safety statements (S) | 26-61 |
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 Cyclooctanone used for?
+
Cyclooctanone is used as a building block in chemical synthesis, notably in the preparation of sulfonylbicycloalkanols and 14-membered lactones.
What is the CAS number and formula for Cyclooctanone?
+
The CAS number for Cyclooctanone is 502-49-8, and its linear formula is C8H14(=O).
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Cyclooctanone with a purity of ≥95.0% (GC), designated as purum grade. We do not represent this product as USP, BP, or EP grade.
How should Cyclooctanone be handled safely?
+
Cyclooctanone is classified with GHS07 symbol and 'Warning' signal word, carrying hazard statements H315, H319, and H335. It can cause skin irritation, serious eye irritation, and respiratory irritation. Recommended personal protective equipment includes eyeshields, gloves, and a type N95 (US) or P1 (EN143) respirator filter. Always consult the Safety Data Sheet (SDS) before handling.
Is Cyclooctanone a controlled substance?
+
The provided data does not indicate that Cyclooctanone (CAS: 502-49-8) is a controlled substance.
How is Cyclooctanone packed and exported by TSS?
+
Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals. Specific packing and export details for Cyclooctanone can be provided upon request.
How can I request a sample or quote for Cyclooctanone?
+
To request a sample or quote for Cyclooctanone, please contact our sales team through the provided channels on our website.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis