Butenylidene-Trimethylcyclohexenone

Also known as: 2-​Cyclohexen-​1-​one, 4-​(2-​buten-​1-​ylidene)​-​3,​5,​5-​trimethyl-, 2-Cyclohexen-1-one, 4-(2-butenylidene)-3,5,5-trimethyl-, 4-(2-Buten-1-ylidene)-3,5,5-trimethyl-2-cyclohexen-1-one, Megastigmatrienone, CYCLOHEX-2-EN-1-ONE, 4-(2-BUTENYLIDENE)-3,5, 5-TRIMETHYL- (+3 more)

INCI: BUTENYLIDENETRIMETHYLCYCLOHEXENONE

Butenylidene-Trimethylcyclohexenone (CAS 13215-88-8) is a cosmetic cosmetic ingredient functioning as Fragrance (tobacco-type odor, also known as Tabanon). EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.

View industrial chemical safety profile for CAS 13215-88-8 →

Auto-generated CPSR Part A draft with source citations
Function
Fragrance (tobacco-type odor, also known as Tabanon)
Safety Rating
GOOD

Chemistry & Identifiers

Formula
C13H18O
MW
190.28 g/mol
EC Number
236-187-2
PubChem CID
107631
IUPAC Name
4-but-2-enylidene-3,5,5-trimethylcyclohex-2-en-1-one
InChIKey
CBQXHTWJSZXYSK-UHFFFAOYSA-N

Regulatory Status

EU EU Status permitted
US US Status permitted
US Notes Adequate per RIFM assessment at recommended use levels

For full compliance data across multiple jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety, dermal absorption, and sensitization profile summaries for Butenylidene-Trimethylcyclohexenone.

Calculate MoS for your specific formulation with the MoS Calculator.

ECHA REACH Registration

European Chemicals Agency REACH dossier and Substances of Very High Concern listing.

Registration Type
Full
Tonnage Band
1 - 10 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No

PubChem Annotations

Safety and regulatory annotations from PubChem (NCBI) aggregated sources.

Regulatory (2)
JECFA Number
2057
Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
JECFA Evaluation
4-(2-BUTENYLIDENE)-3,5,5-TRIMETHYLCYCLOHEX-2-EN-1-ONE (MIXTURE OF ISOMERS) | 2010 | No safety concern at current levels of intake when used as a flavouring agent | TRS 960-JECFA 73 | FAS 64-JECFA 73
Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)

Function Categories & List Membership

Cosmetic/Chemical Function Categories
Flavouring and nutrient Fragrance
Regulatory List Membership (2)
IFRA Fragrance Transparency List FDA Substances Added to Food (EAFUS)

Expert Verdict

Expert safety assessment and concern-level summary for Butenylidene-Trimethylcyclohexenone.

Regulatory Flags

potential-allergen fragrance-component ifra_fragrance fda_food_additive

Known Synonyms

2-​Cyclohexen-​1-​one, 4-​(2-​buten-​1-​ylidene)​-​3,​5,​5-​trimethyl- 2-Cyclohexen-1-one, 4-(2-butenylidene)-3,5,5-trimethyl- 4-(2-Buten-1-ylidene)-3,5,5-trimethyl-2-cyclohexen-1-one Megastigmatrienone CYCLOHEX-2-EN-1-ONE, 4-(2-BUTENYLIDENE)-3,5, 5-TRIMETHYL- 4-(2-butenylidene)-3,5,5-trimethylcyclohex-2-en-1-one 2-Cyclohexene-1-one, 4-(2-butylidene)- 3,5,5- trimethyl-, (4 isomers ca. 50-60%) EC No.: 236-187-2

Chemical Function

Fragrance Flavouring and nutrient

Regulatory Lists

IFRA Transparency food_additive; Substances Added to Food (formerly EAFUS) (2/2019) Europe

Australian Status

AICIS status: listed

Frequently Asked Questions

Is Butenylidene-Trimethylcyclohexenone safe in cosmetics?

Butenylidene-Trimethylcyclohexenone has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.

Is Butenylidene-Trimethylcyclohexenone allowed in the EU?

Butenylidene-Trimethylcyclohexenone EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Butenylidene-Trimethylcyclohexenone do in cosmetics?

Butenylidene-Trimethylcyclohexenone functions as: Fragrance (tobacco-type odor, also known as Tabanon). It is classified as a cosmetic ingredient in our database. CAS number: 13215-88-8.

Is Butenylidene-Trimethylcyclohexenone used outside cosmetics?

Butenylidene-Trimethylcyclohexenone also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.

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