2-Methylbutyl 2-methylpropanoate, also called 2-methylbutyl isobutyrate, is a branched aliphatic ester found in ester-rich essential oils and hop aroma matrices. In the AromaForge archive it is most relevant as a major Cape chamomile constituent with a sweet fruity profile. Public evidence is strongest for identity, occurrence, and food-flavouring safety review; direct constituent-specific pharmacology is sparse.
Aroma and practical use
- Use the recorded fruity, apple-like, pineapple-like, sweet 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 commercial Cape chamomile oil study reported 2-methylbutyl 2-methylpropanoate at 21.2% and described it as one of the main components across multiple harvest-year samples.
A commercial Cape chamomile oil study reported 2-methylbutyl 2-methylpropanoate at 21.2% and described it as one of the main components across multiple harvest-year samples.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
An EFSA flavouring-group evaluation listed 2-methylbutyl isobutyrate among branched-chain aliphatic esters and noted a very low MSDI relative to the structural class I threshold of concern.
An EFSA flavouring-group evaluation listed 2-methylbutyl isobutyrate among branched-chain aliphatic esters and noted a very low MSDI relative to the structural class I threshold of concern.
The source assessment applies to its specified exposure and preparation; this entry is not an unrestricted-use clearance.
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 attachedPublic flavouring assessments support low oral-exposure concern within food-use frameworks, but I did not locate a constituent-specific topical dermal maximum for essential-oil use in this pass.
The source assessment applies to its specified exposure and preparation; this entry is not an unrestricted-use clearance.
No phototoxicity-specific study was located in this pass.
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
Likely hydrolyzed by human carboxylesterases to 2-methylbutanol and isobutyric acid.
This is an inference from general ester xenobiotic metabolism rather than a constituent-specific experiment. Human CES1 and CES2 are broadly described as handling ester-containing xenobiotics.
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 constituent-specific human clinical literature was located in this pass.
- No constituent-specific dermal-limit or sensitization-study record was verified in public sources reviewed here.
- Mechanistic handling is inferred from general ester metabolism literature rather than a direct study on this molecule.
- 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.