Isoamyl isobutyrate is a branched aliphatic ester best known in flavor and fragrance work for its fruity apricot-pineapple profile and for its recurring presence in Roman chamomile oil. The strongest accessible evidence in this pass supports its identity, food-flavor listing, and high-level occurrence in ester-rich chamomile profiles. Direct constituent-specific pharmacology or human topical data were not verified, so AromaForge should frame isoamyl isobutyrate mainly as a composition and aroma constituent with limited standalone bioactivity evidence.
Chemical identity and composition
PubChem identifies isoamyl isobutyrate as C9H18O2 with IUPAC name 3-methylbutyl 2-methylpropanoate and InChIKey VFTGLSWXJMRZNB-UHFFFAOYSA-N. FDA and JECFA records align the same identity under the isoamyl and isopentyl synonym set. In the archive's Roman chamomile record, it appears as one of the dominant low-molecular-weight esters rather than a trace minor constituent.
Aroma and practical use
- Use the recorded fruity, apricot-like, pineapple-like, sweet 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.
The EMA assessment report on Chamaemelum nobile lists isoamyl isobutyrate among the main Roman chamomile oil constituents at 10.9-23.7%.
This is the clearest verified occurrence source in the archive context and supports treating the compound as a major ester contributor to Roman chamomile composition.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
A pear-ripening transcriptomic study reported that 1-MCP reduced production of several volatile esters including isoamyl isobutyrate.
This supports broader plant-volatiles context for the ester but does not provide direct safety or pharmacology evidence.
This reference does not establish a therapeutic result or a safe use level for a custom oil 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 assessed
Not assessed in the available record.
Penetration enhancementNot assessed
Not assessed in the available record.
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 attachedFDA's Substances Added to Food inventory lists isoamyl isobutyrate as a flavoring agent or adjuvant under 21 CFR 172.515.
The source assessment applies to its specified exposure and preparation; this entry is not an unrestricted-use clearance.
No direct public citation is attached to this entry.
JECFA maintains a full flavouring specification entry for isoamyl isobutyrate and describes it as a liquid with a fruity apricot, pineapple-like odour.
The source assessment applies to its specified exposure and preparation; this entry is not an unrestricted-use clearance.
No direct public citation is attached to this entry.
No constituent-specific human patch, dermal-limit, or standalone fragrance safety assessment was verified in this pass for isoamyl isobutyrate itself.
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
expected_ester_hydrolysis
Like other simple branched aliphatic esters, isoamyl isobutyrate is expected to undergo esterase-mediated hydrolysis to isoamyl alcohol and isobutyric acid. This is a metabolism inference from general carboxylesterase chemistry rather than a direct experiment on this exact molecule.
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.
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 direct human clinical or topical-tolerability literature was verified for isolated isoamyl isobutyrate in this pass.
- The mechanism note is an inference from general ester metabolism rather than a measured constituent-specific experiment.
- Public evidence is stronger for flavoring identity and Roman chamomile occurrence than for standalone safety or pharmacology.
- 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.