- IUPAC name
- 2,6,6,8-tetramethyltricyclo[5.3.1.01,5]undec-8-ene
- Molecular formula
- C15H24
- Molecular weight
- 204.35 g/mol
- Exact mass
- 204.187800766 Da
- XLogP3
- 4.6
- Topological polar surface area
- 0.0 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 0
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
2,6,6,8-tetramethyltricyclo(5.3.1.01,5)undec-8-eneRefChem:918181234-257-71M4BF4O9SA2,6,6,8-TETRAMETHYLTRICYCLO[5.3.1.0(1,5)]UNDEC-8-ENEDi-epi-.alpha.-cedrene1H-3a,7-Methanoazulene, 2,3,4,7,8,8a-hexahydro-3,6,8,8-tetramethyl-Cedarwood terpenes
7 more reported names
1H-3a,7-Methanoazulene, 2,3,4,7,8,8a-hexahydro-3,6,8,8-tetramethyl-, [3R-(3.alpha.,3a.beta.,7.beta.,8a.alpha.)]-Alpha-cedrene solutionCedr-8-ene #CHEBI:167345(-)-a-Cedrene sum of enantiomersDB-025783DB-051411
External database identifiers
Evidence from additional scientific databases
NIH PubChem PUG-View
Exact identifier match521207
Attributed physical-property, hazard, environmental and use annotations.
- Signal: Danger Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H304 (100%): May be fatal if swallowed and enters airways [Danger Aspiration hazard]; H400 (> 99.9%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]; H410 (> 99.9%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P273, P301+P316, P331, P391, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 1419 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Toxicity Summary: The existing information was reviewed by the independent Expert Panel for Fragrance Safety and supports the use of Cedrene as described in this fragrance ingredient safety assessment. Data show that it is not genotoxic. The repeated dose, reproductive, and local respiratory toxicity endpoints were evaluated using the Threshold of Toxicological Concern (TTC) for a Cramer Class I material, and the exposures are below the respective TTCs. The data for Cedrene provided a No Expected Sensitization Induction Level (NESIL) of 3500 μg/cm2 for the skin sensitization endpoint. Cedrene is not expected to be photoirritating/photoallergenic based on evaluation of the data and ultraviolet/visible (UV/Vis) spectra. Source: Pertti (Bert) Hakkinen's Toxicology and Other Annotations
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.