Ingredient Record

2-Isobutyl-3-thiazoline

CAS 39800-92-5

HigherBar policy

Avoids

Standard criterion: No prohibited ingredients

HigherBar avoids it: a registry we track has prohibited or withdrawn it.

Regulatory status

Withdrawn in United Kingdom (FSA); approved in 1 of 7 tracked registries, no published record in 5.

See the status of each registry, with sources

Regulatory Record

What each registry publishes about 2-isobutyl-3-thiazoline.

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.

Withdrawn in United Kingdom (FSA); approved in 1 of 7 tracked registries, no published record in 5. Last verified Oct 1, 2026.

Published regulatory status for 2-Isobutyl-3-thiazoline, one row per registry.
RegistryStatusPublished record
United States (FDA)No published dataOur sources hold no evidenced record here. That is not a clearance and not a ban.
European Union (EFSA)ApprovedflavorNo effective date published · Last verified Oct 1, 2026View the source document
United Kingdom (FSA)WithdrawnflavorWithdrawn at the request of the flavourings industry. NB was a flavouring substance under evaluation/footnote flavouring | Transitional: Withdrawn on 13 October 2025. Transitional provisions for England (1) The flavouring substances and foods containing them may, until their date of minimum durability of a food or ‘use by’ date, be placed on the market and, as the case may be, added to other foods, if — a) present in the United Kingdom and were, or could have been, lawfully placed on the market in Great Britain before the end of 12 October 2025; or b) in transit to Great Britain before the end of 12 October 2025, and could have lawfully been imported, or moved into Great Britain, and placed on the market as at the date of dispatch. (2) Foods containing one or more flavouring substances to which (1) a) or b) applies may, until their date of minimum durability of a food or ‘use by’ date, be placed on the market and, as the case may be, added to other foods. Transitional provisions for Wales (1) The flavouring substances under evaluation and food containing them may, until their date of minimum durability or ‘use by’ date, be placed on the market and, as the case may be, added to other food, if they were— a) present in the United Kingdom and were, or could have been, lawfully placed on the market in Great Britain before the end of 12th October 2025; or b) in transit to Great Britain before the end of 12th October 2025, and could have lawfully been imported or moved into Great Britain and placed on the market on that date. (2) Food containing one or more flavouring substances to which paragraph (1) applies may, until its date of minimum durability or ‘use by’ date, be placed on the market and, as the case may be, added to other food Transitional provisions for Scotland (1) The flavouring substances under evaluation and foods containing them may, until their date of minimum durability of a food or ‘use by’ date, be placed on the market and, as the case may be, added to other foods, if— a) present in the United Kingdom and were, or could have been, lawfully placed on the market in Great Britain before the end of 12th October 2025; or b) in transit to Great Britain before the end of 12th October 2025, and could have lawfully been imported, or moved into Great Britain, and placed on the market as at the date of dispatch. (2) Foods containing one or more flavouring substances to which paragraph (1) a) or b) applies may, until their date of minimum durability of a food or ‘use by’ date, be placed on the market and, as the case may be, added to other foods.Effective Oct 13, 2025 · Last verified Oct 1, 2026View the source document
Codex Alimentarius (JECFA)No published dataOur sources hold no evidenced record here. That is not a clearance and not a ban.
Japan (CAA)No published dataOur sources hold no evidenced record here. That is not a clearance and not a ban.
Australia & New Zealand (FSANZ)No published dataOur sources hold no evidenced record here. That is not a clearance and not a ban.
Canada (Health Canada)No published dataOur 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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