- beauty
- industrial
(2R,4R)-2-Methyl-4-propyl-1,3-oxathiane
CAS 94669-63-3
Also registered as 1 other CAS number
59324-17-3
Concern score
Not assessed — no hazard data yet.
(2R,4R)-2-Methyl-4-propyl-1,3-oxathiane in plain language
On cosmetic ingredient lists it appears as “TRANS-2-METHYL-4-PROPYL-1,3-OXATHIANE”.
Also known as TRANS-2-METHYL-4-PROPYL-1,3-OXATHIANE · 2-METHYL-4-PROPYL-1,3-OXATHIANE, trans- · (e)-galbanum oxathiane · 1,3-OXATHIANE, 2-METHYL-4-PROPYL-, (2R,4R)-REL- · (+/-)-TRANS-2-METHYL-4-PROPYL-1,3-OXATHIANE · (±)-TRANS-2-METHYL-4-PROPYL-1,3-OXATHIANE
Show all 16 names
1,3-Oxathiane, 2-methyl-4-propyl-, (2R,4R)- · 1,3-Oxathiane, 2-methyl-4-propyl-, trans- · 2-METHYL-4-PROPYL-TRANS-1,3-OXATHIANE · DB-321762 · Gkgolpmyjjxrgd-htqzyqbosa-n · TRANS-2-METHYL-4-PROPYL-1,3-OXATHIANE, (+/-)- · TRANS-2-METHYL-4-PROPYL-1,3-OXATHIANE, (±)- · UNII-5AFX6I408R · rel-(2R,4R)-2-Methyl-4-propyl-1,3-oxathiane · trans-2-methyl-4-n-propyl-1,3-oxathiane
Used in cosmetics as a fragrance ingredient.
- Perfuming
- Fragrance
- Flavouring
- We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.
Regulation
No restrictions found. (2R,4R)-2-Methyl-4-propyl-1,3-oxathiane appears in these published regulatory listings.
- 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 Fragrance, Flavouring and nutrient.
- EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Fragrance, Flavouring and nutrient.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 (2R,4R)-2-Methyl-4-propyl-1,3-oxathiane. 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 (2R,4R)-2-Methyl-4-propyl-1,3-oxathiane yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Where this comes from
- Open →
CosIng
regulatory · updated 2026-09-23
- Open →
EPA Chemical and Products Database
exposure · updated 2020-03-19
- 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
Reference links (1)
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.
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 (2R,4R)-2-Methyl-4-propyl-1,3-oxathiane in a product composition. These are source records, not Greenveil catalog products.
Named organisations
2
Typical roles
PerfumingFragranceFlavouring