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Methyl di-t-butyl hydroxyhydrocinnamate

CAS 88731-45-7

Also registered as 3 other CAS numbers

96956-57-9 · 137754-49-5 · 6386-38-5

Methyl di-t-butyl hydroxyhydrocinnamate chemical structure

Concern score

Not assessed — no hazard data yet.

Methyl di-t-butyl hydroxyhydrocinnamate in plain language

What it is

Also known as Methyl 3,5-bis(tert-butyl)-4-hydroxyhydrocinnamate · Fenozan 1 · Methyl .BETA.-3,5-DI-TERT-BUTYL-4-HYDROXYPHENYLPROPIONATE · Methyl 3-(3',5'-DI-TERT-BUTYL-4'-HYDROXYPHENYL)PROPIONATE · Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate · Phenosan methyl ester

Show all 19 names

methyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate · Benzenepropanoic acid, 3,5-bis(1,1-di-methylethyl)- · Ec 228-985-4 · Methyl (3,5-DI-TERT-BUTYL-4-HYDROXYPHENYL)PROPIONATE · Methyl .BETA.-(4-HYDROXY-3,5-DI-TERT-BUTYLPHENYL)PROPANOATE · Methyl .BETA.-(4-HYDROXY-3,5-DI-TERT-BUTYLPHENYL)PROPIONATE · Methyl 3,5-DI-TERT-BUTYL-4-HYDROXY-.BETA.-PHENYLPROPIONATE · Methyl 3,5-DI-TERT-BUTYL-4-HYDROXYCINNAMATE · Methyl 3,5-DI-TERT-BUTYL-4-HYDROXYHYDROCINNAMATE · Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate · Metilox · Pxmjceceftyeke-uhfffaoysa-n · Ralox 35

What it does

Used in cosmetics as an antioxidant and a fragrance ingredient.

  • Antioxidant
  • Perfuming
  • Fragrance
Is it a concern?
We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. Methyl di-t-butyl hydroxyhydrocinnamate appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Antioxidant, Fragrance.
    • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Antioxidant, Fragrance.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Methyl di-t-butyl hydroxyhydrocinnamate. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

Evidence & sources

No graded research studies for Methyl di-t-butyl hydroxyhydrocinnamate yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EPA Chemical and Products Database

    exposure · updated 2020-11-27

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →

  • openFDA Substance

    registry · updated 2026-05-24

    Open →

  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it has been recorded

How often EPA CPDat has listed Methyl di-t-butyl hydroxyhydrocinnamate in a product composition. These are source records, not Greenveil catalog products.

Named organisations

5

Typical roles

AntioxidantPerfumingFragrance
See products using Methyl di-t-butyl hydroxyhydrocinnamate →

Catalog

Found in these products

Cosmetic and personal-care products that list Methyl di-t-butyl hydroxyhydrocinnamate are shown first. Their ingredient lists include Methyl di-t-butyl hydroxyhydrocinnamate; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 9 →Find products without it →