alpha-Curcumene, often written ar-curcumene in the literature, is a sesquiterpene hydrocarbon found in ginger, turmeric relatives, lemon verbena, and other aromatic plants. The current evidence base is strongest for chemical identity and occurrence, plus a small set of preclinical papers describing cell-level anti-inflammatory signaling, mosquito-control activity, and apoptosis-related effects in cancer-cell models. Human clinical evidence and constituent-specific fragrance safety review remain limited, so archive summaries should keep claims narrow and source-grounded.
Chemical identity and composition
PubChem lists alpha-curcumene as C15H22 and links the generic name to CAS 644-30-4, while the chiral (-)-alpha-curcumene entry maps to CAS 4176-17-4. In public aroma and natural-products literature, alpha-curcumene and ar-curcumene are often used interchangeably, so this record keeps the archive's alpha_curcumene identifier while noting the naming overlap.
Aroma and practical use
- Use the recorded woody, spicy, warm, ginger-like 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 study on ginger components reported that the slight LPS-induced increase of RANTES in BEAS-2B cells was reduced by volatile oil, ar-curcumene, and alpha-pinene.
Measured: LPS-associated chemokine response
This experimental finding does not establish benefit, dose or safety in people using this blend.
cytotoxicity related research
An open-access article title and snippet report that alpha-curcumene induced apoptosis through mitochondrial activation in ovarian cancer cells, placing the finding in a preclinical oncology context.
Measured: apoptosis and mitochondrial activation
This experimental finding does not establish benefit, dose or safety in people using this blend.
mosquito larvicidal activity
A mosquito-vector paper reported that ar-curcumene showed high larvicidal activity against three mosquito species and also deterred oviposition at low doses, while acute toxicity to the tested guppy fish model was reported as 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 attachedPubChem's hazard summary for the generic alpha-curcumene substance record linked to CAS 644-30-4 includes aspiration-hazard, skin-irritation, and skin-sensitization notifications from the ECHA C&L inventory.
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.
No constituent-specific human clinical safety trials, dermal-limit monograph, or phototoxicity review specific to isolated alpha-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.
Some public records distinguish generic alpha-curcumene from the chiral (-)-alpha-curcumene entry, so identity and safety records should be read with the naming variant in mind.
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 airway cells
In BEAS-2B bronchial epithelial cells, ar-curcumene was reported to reduce LPS-associated RANTES increases, suggesting a narrow anti-inflammatory signaling effect in that model.
This experimental finding does not establish benefit, dose or safety in people using this blend.
mitochondrial apoptosis signal
An ovarian cancer cell paper described alpha-curcumene as inducing apoptosis with mitochondrial involvement, making the mechanism relevant as preclinical cytotoxicity research rather than consumer benefit evidence.
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 (6)
- No human clinical studies specific to isolated alpha-curcumene were located in the reviewed public sources.
- The accessible bioactivity literature is sparse and often studies ar-curcumene within broader ginger or Curcuma contexts rather than as a rigorously isolated standalone fragrance constituent.
- Identity records split between generic alpha-curcumene and the (-)-alpha-curcumene enantiomer, so future upgrades should reconcile CAS use against the archive's preferred naming standard.
- Re-verification pass (2026-07-13, 2 searches): confirmed only that a single ECHA C&L notification exists for CAS 644-30-4 (per prior safety_notes), but no IFRA/Tisserand & Young/EU Annex III dermal limit, and no constituent-specific phototoxicity study, was located. The existing dermal_limit_pct (25) and sensitizing (true) values remain unsourced placeholders and dermal_limit_verified is correctly left false; these values were left unchanged pending a citable source, per policy of not guessing or fabricating.
- 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.