trans-alpha-Necrodol is one of the unusual necrodane monoterpenoids associated with Lavandula stoechas subsp. luisieri and related Iberian lavender chemotypes. The live evidence base is narrow but real: public sources support its registry identity in PubChem, repeated occurrence in luisieri-type lavender oils, and chemistry context tied to necrodane metabolites rather than mainstream fragrance or wellness literature. For AromaForge, this constituent is best handled as a distinctive chemotaxonomic and aroma marker with mostly mixture-level biological context and clear gaps around isolated-compound safety or efficacy data.
Chemical identity and composition
PubChem lists trans-alpha-Necrodol as C10H18O with an irregular cyclopentane-derived necrodane skeleton. The reviewed literature treats necrodane monoterpenoids as characteristic of Lavandula luisieri chemistry, and archive oil data place trans-alpha-Necrodol at 10.4% in the existing lavender Seville profile.
Aroma and practical use
- Use the recorded herbal, camphoraceous, lavender-like, terpenic, herbaceous descriptors to explore a blend's scent character; perceived strength also depends on the other ingredients.
- Read the route, preparation and experimental context before using a study finding to choose an oil.
Reported benefits and effects
Findings retain their study context. An animal or laboratory result describes that experiment.
A 2020 lavender review describes Lavandula stoechas subsp. luisieri essential oils as characterized by trans-alpha-necrodyl acetate and trans-necrodol.
The abstract frames trans-necrodol as one of the defining chemistry markers of the subspecies and summarizes mixture-level antibacterial, antifungal, antioxidant, anti-inflammatory, and antifeedant literature for these oils.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
A 2025 open-access study reported strong DPPH antioxidant performance for Lavandula stoechas subsp. luisieri essential oil in a six-oil comparison against Penicillium-focused spoilage models.
The abstract reports that luisieri oil gave the highest DPPH antioxidant result in the tested set, but this remains oil-level evidence and cannot be assigned specifically to trans-alpha-Necrodol alone.
This experimental finding does not establish benefit, dose or safety in people using this blend.
Archive-linked peer-reviewed composition data report trans-alpha-Necrodol at 10.4% in the lavender Seville profile.
This supports trans-alpha-Necrodol as a practically meaningful marker in the archive's necrodane-type lavender profile.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
Use concerns and concentration limits
Sensitization concernNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
Phototoxicity concernNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
Oxidation concernNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
Penetration enhancementNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
Screening assumption (family fallback). It is not a verified constituent-specific exposure limit.
model fallback · Tisserand Institute — Essential Oil Safety Maximum Dermal Use Level guidance (general oxygenated monoterpenoid constituents e.g. linalool, geraniol, linalyl acetate)No verified CAS, IFRA limit, RIFM monograph, or constituent-specific human tolerability study was located for isolated trans-alpha-Necrodol.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
No direct public citation is attached to this entry.
Available biological activity findings are mixture-level and should not be rewritten as direct claims for the isolated constituent.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
No direct public citation is attached to this entry.
Because necrodane compounds are niche and sparsely documented in public safety literature, conservative handling is warranted in consumer-facing copy.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
No direct public citation is attached to this entry.
Constituents it may interact with
No constituent-pair interaction is recorded for this identity. The report does not assume either amplification or incompatibility.
What this report cannot establish
- A reported constituent percentage does not establish an effective human therapeutic dose or the amount absorbed into the body.
- The presence of a constituent does not guarantee a clinical benefit, rash treatment or sleep improvement from a custom blend.
- An unflagged concern or missing use limit does not establish safety for ingestion, inhalation, skin exposure or a particular person.
- A candidate constituent interaction does not establish that two oils amplify one another at the selected proportions.
- Constituent descriptors alone do not establish a precise top, heart or base lifetime in a finished blend.
Known data gaps (6)
- No reliable public CAS number for isolated trans-alpha-Necrodol was verified in this pass, so the record keeps CAS as null.
- This pass did not locate isolated-compound pharmacology or toxicology studies that cleanly separate trans-alpha-Necrodol from the broader lavender oil mixture.
- Most accessible evidence concerns chemotaxonomy and whole-oil activity, not purified constituent dose-response behavior.
- Second pass (2026-07-13): searched for IFRA/RIFM data for necrodol/necrodyl-acetate necrodane compounds specific to Lavandula stoechas subsp. luisieri; confirmed via multiple sources that no CAS-specific fragrance safety assessment exists for these niche necrodane monoterpenoids. The prior dermal_limit_pct 20 had no traceable citation and is corrected to null pending real data.
- No constituent-specific numeric dermal reference is available here.
- Some findings do not record an explicit exposure route; consult the linked study before applying them to a use.