Is 3-Ethyl-2-Hydroxy-4-Methylcyclopent-2-En-1-One safe in cosmetics?
3-Ethyl-2-Hydroxy-4-Methylcyclopent-2-En-1-One has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Cosmetic Ingredient
3-Ethyl-2-Hydroxy-4-Methylcyclopent-2-En-1-One
INCI: 3-ETHYL-2-HYDROXY-4-METHYLCYCLOPENT-2-EN-1-ONE
3-Ethyl-2-Hydroxy-4-Methylcyclopent-2-En-1-One (CAS 21835-01-8 (Corylone / Maple Lactone) — *confirm via CosIng*) is a cosmetic cosmetic ingredient functioning as Perfuming/Fragrance — sweet, caramellic, maple-like character. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
Auto-generated CPSR Part A draft with source citations
CAS Number
21835-01-8 (Corylone / Maple Lactone) — *confirm via CosIng*
View industrial chemical safety profile →
Function
Perfuming/Fragrance — sweet, caramellic, maple-like character
Safety Rating
GOOD
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted; also used as a food flavoring (FEMA listed)
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for 3-Ethyl-2-Hydroxy-4-Methylcyclopent-2-En-1-One.
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Expert safety assessment and concern-level summary for 3-Ethyl-2-Hydroxy-4-Methylcyclopent-2-En-1-One.
Regulatory Flags
fragrance-component
jecfa_safe
Frequently Asked Questions
Is 3-Ethyl-2-Hydroxy-4-Methylcyclopent-2-En-1-One allowed in the EU?
3-Ethyl-2-Hydroxy-4-Methylcyclopent-2-En-1-One EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does 3-Ethyl-2-Hydroxy-4-Methylcyclopent-2-En-1-One do in cosmetics?
3-Ethyl-2-Hydroxy-4-Methylcyclopent-2-En-1-One functions as: Perfuming/Fragrance — sweet, caramellic, maple-like character. It is classified as a cosmetic ingredient in our database. CAS number: 21835-01-8 (Corylone / Maple Lactone) — *confirm via CosIng*.
Compliance Tools
Check 3-Ethyl-2-Hydroxy-4-Methylcyclopent-2-En-1-One compliance across multiple jurisdictions:
Ingredient Decoder
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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