Is Prenyl Benzoate safe in cosmetics?
Prenyl Benzoate has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Cosmetic Ingredient
Prenyl Benzoate
Also known as: Benzoic acid, 3-methyl-2-butenyl ester, BRN 2046710, EINECS 225-998-7, 3-Methylbut-2-enyl benzoate, UNII-O577ZIE86G
INCI: PRENYL BENZOATE (SYN. 3-METHYL-2-BUTENYL BENZOATE)
Prenyl Benzoate (CAS 5205-11-8) is a cosmetic cosmetic ingredient functioning as Perfuming (fragrance ingredient). EU Regulation 1223/2009 status: permitted, max 0.24%. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and pharmaceutical data.
View industrial chemical safety profile for CAS 5205-11-8 →
Auto-generated CPSR Part A draft with source citations
Function
Perfuming (fragrance ingredient)
Safety Rating
GOOD
Chemistry & Identifiers
IUPAC Name
3-methylbut-2-enyl benzoate
InChIKey
INVWRXWYYVMFQC-UHFFFAOYSA-N
Regulatory Status
EU EU Status
permitted
EU Max Conc.
0.24%
US US Status
permitted
US Notes
FEMA 4203; JECFA No. 2063. Permitted as fragrance in cosmetics
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Prenyl Benzoate.
Calculate MoS for your specific formulation with the MoS Calculator.
HRIPT Human Patch Test Studies
1 human repeat insult patch test aggregated from dermatological literature.
| Test Type | N | Sensitized | Dose µg/cm² | NESIL µg/cm² | Potency |
|---|---|---|---|---|---|
| HMT | - | 0 | 13500 | - | - |
PubChem Annotations
Safety and regulatory annotations from PubChem (NCBI) aggregated sources.
Regulatory (2)
JECFA Number
2063
Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
JECFA Evaluation
PRENYL BENZOATE | 2010 | No safety concern at current levels of intake when used as a flavouring agent | TRS 960-JECFA 73/108 | FAS 64-JECFA 73/189
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 (3)
IFRA Fragrance Transparency List
FDA Substances Added to Food (EAFUS)
Consumer Product Chemical
Expert Verdict
Expert safety assessment and concern-level summary for Prenyl Benzoate.
Regulatory Flags
fragrance-component
ifra_fragrance
fda_food_additive
jecfa_safe
Known Synonyms
Benzoic acid, 3-methyl-2-butenyl ester
BRN 2046710
EINECS 225-998-7
3-Methylbut-2-enyl benzoate
UNII-O577ZIE86G
Chemical Function
Fragrance
Flavouring and nutrient
Regulatory Lists
IFRA Transparency
consumer_product
Europe
food_additive; Substances Added to Food (formerly EAFUS) (2/2019)
Australian Status
AICIS status: listed
Cross-Vertical Safety Context
Same-CAS public records found in pharmaceutical data.
SOURCE
ChEMBL / DrugCentral / FAERS
DB_PHARMA CAS match
Pharmaceutical Data
Same-CAS rows from the pharmaceutical spoke database.
Compound
BENZOIC ACID 3-METHYL-2-BUTENYL ESTER
ChEMBL ID
CHEMBL2260710
Frequently Asked Questions
Is Prenyl Benzoate allowed in the EU?
Prenyl Benzoate EU regulatory status: permitted. Maximum allowed concentration: 0.24%. This is based on EU Regulation 1223/2009 and its amendments.
What does Prenyl Benzoate do in cosmetics?
Prenyl Benzoate functions as: Perfuming (fragrance ingredient). It is classified as a cosmetic ingredient in our database. CAS number: 5205-11-8.
Is Prenyl Benzoate used outside cosmetics?
Prenyl Benzoate also appears in industrial chemical safety and pharmaceutical data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Compliance Tools
Check Prenyl Benzoate compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
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