p-Anisaldehyde is the para-methoxy isomer of anisaldehyde, an aromatic aldehyde used in flavor and fragrance work and reported in anise-family materials. The strongest live evidence here is identity data, a dedicated fragrance safety assessment, TRPA1 sensory-receptor activity, and a direct antifungal paper in Penicillium models. That makes p-anisaldehyde one of the better-documented niche aroma aldehydes in the archive, while still requiring non-medical framing because the activity literature remains preclinical.
Chemical identity and composition
PubChem identifies p-anisaldehyde as 4-methoxybenzaldehyde with formula C8H8O2 and InChIKey ZRSNZINYAWTAHE-UHFFFAOYSA-N. PubChem synonym data align p-anisaldehyde with anisic aldehyde, aubepine, and CAS 123-11-5, which helps distinguish the para isomer explicitly rather than treating it as a loose anisaldehyde label.
Aroma and practical use
- Use the recorded sweet, floral, hawthorn-like, anise-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.
A 2020 Scientific Reports study confirmed p-anisaldehyde as a natural agonist of the TRPA1 channel while evaluating plant-derived aldehydes relevant to chemesthesis.
A 2020 Scientific Reports study confirmed p-anisaldehyde as a natural agonist of the TRPA1 channel while evaluating plant-derived aldehydes relevant to chemesthesis.
This experimental finding does not establish benefit, dose or safety in people using this blend.
A 2019 Journal of Microbiology and Biotechnology study reported that p-anisaldehyde inhibited Penicillium digitatum and P. italicum with MIC and MFC values of 2.00 μl/ml and associated the effect with disrupted membrane permeability and cell-wall integrity.
A 2019 Journal of Microbiology and Biotechnology study reported that p-anisaldehyde inhibited Penicillium digitatum and P. italicum with MIC and MFC values of 2.00 μl/ml and associated the effect with disrupted membrane permeability and cell-wall integrity.
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 attachedA 2022 RIFM fragrance ingredient safety assessment exists for p-methoxybenzaldehyde, which gives this constituent a dedicated fragrance-safety review trail.
The source assessment applies to its specified exposure and preparation; this entry is not an unrestricted-use clearance.
The public evidence reviewed here does not establish a constituent-specific modern dermal limit for finished aromatherapy blends.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
The verified activity studies are in receptor or fungal models and should not be translated into medical claims.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
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
TRPA1 agonism
A 2020 receptor-screening paper confirmed p-anisaldehyde as a natural agonist of the human TRPA1 channel, supporting sensory-irritant and chemesthetic relevance.
This experimental finding does not establish benefit, dose or safety in people using this blend.
Fungal membrane and cell-wall disruption
The Penicillium study linked p-anisaldehyde activity to disrupted membrane permeability and impaired cell-wall integrity under treatment conditions.
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 (5)
- The strongest verified activity evidence is preclinical and mechanistic rather than human clinical.
- A current constituent-specific dermal limit or IFRA-style topical threshold was not verified in this pass.
- Occurrence in essential oils is real but often minor relative to dominant anethole-family components, so composition context can vary by oil.
- 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.