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CAS 139539-66-5

CAS 139539-66-5 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 139539-66-5

CAS 139539-66-5PubChem CID 57483301

5-Methyl-1-(2,2,3-trimethylcyclopent-3-en-1-yl)-6-oxabicyclo[3.2.1]octane

IUPAC name: 5-methyl-1-(2,2,3-trimethylcyclopent-3-en-1-yl)-6-oxabicyclo[3.2.1]octane

Molecular formula: C16H26O
Molecular weight: 234.38 g/mol
Exact mass: 234.198365449 Da
XLogP3: 3.6
Topological polar surface area: 9.2 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

RefChem:536834RTIYSHLNESDZSF-UHFFFAOYSA-N

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External database identifiers

EPA DTXSID:DTXSID101021305

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 139539-66-5

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How CAS 139539-66-5 is used on this site

CAS 139539-66-5 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 139539-66-5 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.