Camphene
Identity
| Property | Value |
|---|---|
| Preferred name | Camphene |
| IUPAC name | 2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane |
| CAS number | 79-92-5 |
| PubChem CID | 6616 [^4] |
| Chemical family | Bicyclic Monoterpene |
| Molecular formula | C10H16 |
| Molecular mass | 136.23 g/mol |
| Stereochemistry | Two enantiomeric forms; natural material is predominantly the (1R)-(+)-enantiomer [^1] |
Aroma and sensory character
Camphoraceous, pine, fir-needle, and woody character.
Occurrence outside cannabis
- Fir and spruce needle oils (Abies, Picea species)
- Rosemary (Rosmarinus officinalis)
- Ginger (Zingiber officinale)
- Nutmeg (Myristica fragrans)
Physical properties
| Property | Value |
|---|---|
| Standard boiling point | ≈156–160 °C at 760 mmHg (literature values: 159–160 °C ChemicalBook; 156–160 °C ICSC 1704) [^1] |
| Reference pressure | 101.325 kPa |
| Data source | ICSC 1704 (ILO/WHO); ChemicalBook; NIST WebBook (CAS 79-92-5) lists a mean of 380 ± 100 K that is too dispersed to use [^1] |
Thermal-extraction context
Camphene is one of the more volatile bicyclic monoterpenes and appears in headspace profiles of resinous botanical material.
Reported biological activity
Human evidence
No verified controlled human study of inhaled isolated camphene was identified for this archive [^2].
Animal or laboratory evidence
In vitro and animal studies report antioxidant enzyme induction, suppression of NF-κB-mediated inflammatory signaling, and antimicrobial activity at concentrations far above achievable cannabis-inhalation exposure 1.
Traditional or anecdotal claims
Associated with camphor-based liniments and herbal vapor treatments.
Cannabis laboratory results
Typically a minor constituent of cannabis flower: reported at 0.002–0.09 mg/g dry weight in THC-dominant material and up to ≈0.48 mg/g in CBD-dominant flower across published surveys 2. Consult Lab Results for batch-level measurements.
Sources
Related pages
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No publicly reachable primary source is currently cited for the remaining details in this footnote. The details remain approximate or unverified and are not treated as verified archive facts. ↩
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Fischedick JT. Identification of Terpenoid Chemotypes Among High (−)-trans-Δ9-Tetrahydrocannabinol-Producing Cannabis sativa L. Cultivars. Cannabis Cannabinoid Res. 2017;2(1):34–47. PMID 28861503; Booth JK, et al. Terpene synthases and terpene variation in Cannabis sativa. Plant Physiol. 2020;184(1):130–147. PMID 32591428. ↩
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