2-Isobutyl-4,5-Dimethyloxazole
A synthetic oxazole compound used as a roasted-nutty flavor chemical.
No policy
No HigherBar policy on this ingredient.
Approved in 3 of 7 tracked registries, no published record in 4.
2-Isobutyl-4,5-dimethyloxazole belongs to the oxazole family, heterocyclic compounds frequently used in flavor chemistry to reproduce roasted, nutty, or grain-like notes similar to those formed during cooking, since oxazoles are common Maillard reaction byproducts. It is used at low levels in savory and baked flavor systems.
What each registry publishes about 2-isobutyl-4,5-dimethyloxazole.
Every row comes from a published regulator source, linked so you can read it yourself. "Prohibited" means a regulator has affirmatively banned it; "not authorized" means it has never been cleared for that use there. The two are not the same thing, so we never collapse them.
Approved in 3 of 7 tracked registries, no published record in 4. Last verified Oct 1, 2026.
| Registry | Status | Published record |
|---|---|---|
| United States (FDA) | Approvedgras | Technical effect: FLAVORING AGENT OR ADJUVANT |
| European Union (EFSA) | Approvedflavor | |
| United Kingdom (FSA) | Approvedflavor | |
| Codex Alimentarius (JECFA) | No published data | Our sources hold no evidenced record here. That is not a clearance and not a ban. |
| Japan (CAA) | No published data | Our sources hold no evidenced record here. That is not a clearance and not a ban. |
| Australia & New Zealand (FSANZ) | No published data | Our sources hold no evidenced record here. That is not a clearance and not a ban. |
| Canada (Health Canada) | No published data | Our sources hold no evidenced record here. That is not a clearance and not a ban. |
We publish only evidenced regulatory rows, each with its source. Coverage is uneven across registries, and a missing row is reported as missing.
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Paste a product's full ingredient list and get this same record for every ingredient we can identify, plus an honest "not recognized" for the rest.