Isopulegone is a minty monoterpene ketone most relevant to AromaForge as a minor pennyroyal-type constituent and as a defined intermediate in pulegone and menthol biosynthesis. Identity data are solid, but direct standalone bioactivity literature is much thinner than for isopulegol; the strongest accessible sources are biosynthetic pathway papers, menthol-biocatalysis work, and regulatory safety evaluations. For archive use, isopulegone is best presented as a chemistry and pathway marker with cautious safety language and explicit evidence gaps around isolated pharmacology.
Chemical identity and composition
PubChem resolves isopulegone to CID 10534862 with formula C10H16O and a trans-(2S,5R) stereochemical name, while NIST exposes a separate cis-isopulegone entry with a different InChIKey. The Good Scents Company lists CAS 29606-79-9 and also surfaces the synonym family around p-menth-8-en-3-one and (-)-isopulegone. In the local archive, isopulegone is currently most visible in pennyroyal, where it appears as a minor ketone beside much higher pulegone.
Aroma and practical use
- Use the recorded minty, herbaceous, green, woody 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 1986 Archives of Biochemistry and Biophysics paper identified (+)-cis-isopulegone as the key intermediate in the conversion of (-)-isopiperitenone to (+)-pulegone in peppermint leaf systems and ruled out piperitenone as the pathway intermediate.
This is the foundational constituent-specific source located in this pass and gives isopulegone real pathway relevance even without direct pharmacology claims.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
A 2018 ACS Catalysis paper demonstrated that a bacterial delta5-3-ketosteroid isomerase could act as an isopulegone isomerase, converting (+)-cis-isopulegone to pulegone and supporting menthol-pathway engineering.
This modern source confirms that isopulegone remains a live research intermediate in synthetic-biology and flavor-manufacturing contexts.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
A 2020 EFSA FEEDAP opinion stated that the panel was unable to assess the safety of isopulegone for feed-flavoring use because the purity of the compound could not be established.
This is a useful caution flag because it shows that publicly accessible regulatory discussion still carries unresolved quality-specification limitations for this constituent.
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.
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 attachedThe 2020 EFSA FEEDAP opinion did not conclude safety for isopulegone in feed because the purity of the tested compound could not be established.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
The Good Scents Company record lists a recommendation up to 1.0% in fragrance concentrate, but this should be read as an industry-use reference rather than a broad consumer safety guarantee.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
Because isopulegone sits in the broader pulegone-related chemistry family, archive copy should avoid minimizing safety uncertainty even though constituent-specific toxicology remains sparse in the sources reviewed here.
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
isomerization_step_toward_pulegone_and_menthol_pathways
Peppermint pathway work and engineered bacterial biocatalysis both support isopulegone as the immediate substrate that can be isomerized to pulegone in menthol-related biosynthesis.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
no_well_established_human_constituent_mechanism_verified
No robust human pharmacology mechanism for isolated isopulegone was verified in this pass.
This reference does not establish a therapeutic result or a safe use level for a custom oil 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)
- No human clinical study specific to isolated isopulegone was verified in this pass.
- The strongest direct evidence located for isopulegone is biosynthetic and engineering-focused rather than therapeutic.
- Regulatory discussion reviewed here still includes unresolved purity-specification issues for isopulegone, limiting strong safety conclusions.
- 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.