ar-Curcumene is a sesquiterpene hydrocarbon reported in ginger, helichrysum, Curcuma materials, and related aromatic plants. The evidence base is strongest for identity overlap with alpha-curcumene, natural occurrence, and a small preclinical literature covering airway-cell inflammatory signaling and mosquito-control activity. Human clinical evidence and constituent-specific fragrance safety review remain limited, so this archive record is best read as a chemistry-first profile with explicit naming uncertainty.
Chemical identity and composition
Public databases frequently collapse ar-curcumene into the broader alpha-curcumene record: PubChem returns both generic Curcumene/alpha-Curcumene and an enantiomer-specific S-Curcumene record when queried for ar-curcumene, while HMDB explicitly states that alpha-curcumene is also known as ar-curcumene. Multiple independent industry chemical-supplier identity records (The Good Scents Company, ChemicalBook, BOC Sciences, Pharmaffiliates, ChemFaces, BioCrick) converge on CAS 4176-06-1 specifically for the ar-curcumene name, so this record now uses that CAS instead of leaving the field null; the underlying alpha/ar naming overlap in primary databases like PubChem and HMDB remains unresolved.
Aroma and practical use
- Use the recorded woody, spicy, warm, herbal, ginger-like, herbaceous descriptors to explore a blend's scent character; perceived strength also depends on the other ingredients.
- Review the flagged use concerns across every contributing oil and the selected dilution.
- 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.
anti inflammatory related research
A PubMed-indexed abstract snippet reported that the slight LPS-induced increase of RANTES in BEAS-2B cells was reduced by volatile ginger oil, ar-curcumene, and alpha-pinene.
Measured: LPS-associated RANTES response
This experimental finding does not establish benefit, dose or safety in people using this blend.
biopesticide research
A PubMed abstract reported high larvicidal activity for ar-curcumene against three mosquito species and added that low doses deterred oviposition, while acute toxicity to the tested guppy model was low.
Measured: larvicidal LC50 and oviposition deterrence
This experimental finding does not establish benefit, dose or safety in people using this blend.
Use concerns and concentration limits
Sensitization concernFlagged
Flagged in the constituent reference; assess the source, route and finished-product concentration.
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.
A recorded constituent reference, not a recommended oil dilution. Product category, source applicability and all contributing oils must be checked before use.
unverified reference · No source provenance attachedNo constituent-specific human clinical safety trials, dermal-limit monograph, or phototoxicity review specific to isolated ar-curcumene were located in the reviewed public sources.
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.
The most accessible direct safety-style guidance located in this pass came from trade references that mark ar-curcumene as not for fragrance or flavor use, but without a detailed modern toxicology monograph on the page.
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 public identity records blur generic alpha-curcumene, ar-curcumene, and stereospecific curcumene records, any future safety upgrade should reconcile the exact registry target before adding stronger claims.
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.
How the effects were investigated
reduced rantes signal in beas 2b cells
In BEAS-2B bronchial epithelial cells, ar-curcumene was reported to reduce the slight LPS-associated increase of RANTES.
This experimental finding does not establish benefit, dose or safety in people using this blend.
larvicidal and oviposition deterrent activity
Mosquito-vector testing found ar-curcumene active in larvicidal and oviposition-deterrent assays, supporting a pesticidal mode-of-action context rather than a therapeutic one.
This experimental finding does not establish benefit, dose or safety in people using this blend.
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 (7)
- The archive now has both `alpha_curcumene` and `ar_curcumene` records, but public databases often merge those names, so future curation should decide whether they remain separate IDs or become canonicalized aliases.
- No human clinical studies specific to isolated ar-curcumene were located in the reviewed public sources.
- CAS 4176-06-1 is corroborated by several industry chemical-supplier databases but not by a PubChem or NIST primary record specific to the ar- name; treat as reference-data tier pending a stronger primary-registry confirmation.
- No constituent-specific IFRA restriction, Tisserand dermal limit, or phototoxicity monograph for isolated ar-curcumene was located in this pass; dermal_limit_pct remains an unverified default.
- 2026-07-13 re-verification (worker c3): a follow-up targeted search for ar-curcumene (CAS 4176-06-1) IFRA/dermal-limit data again found no constituent-specific numeric limit; dermal_limit_verified remains false.
- The numeric dermal reference lacks source provenance; a verified flag alone is insufficient.
- Some findings do not record an explicit exposure route; consult the linked study before applying them to a use.