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CAS 546-80-5

CAS 546-80-5 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 546-80-5
CAS 546-80-5PubChem CID 261491

Thujone

(-)-alpha-thujone is the (1S,4R,5R)-stereoisomer of alpha-thujone. It is an enantiomer of a (+)-alpha-thujone. — ChEBI

IUPAC name
(1S,4R,5R)-4-methyl-1-propan-2-ylbicyclo[3.1.0]hexan-3-one
Molecular formula
C10H16O
Molecular weight
152.23 g/mol
Exact mass
152.120115130 Da
XLogP3
2.3
Topological polar surface area
17.1 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
3

Also known as

alpha-Thujone(-)-alpha-thujonel-Thujone(-)-3-thujanone(1S,4R,5R)-4-methyl-1-(propan-2-yl)bicyclo[3.1.0]hexan-3-oneR0SQ9G0DU53-Thujanone, (1S,4R,5R)-(-)-(-)-Thujone
16 more reported names
CHEBI:9577NSC-9374286HK1QRJ4KCHEBI:50040(1S,4R,5R)-4-methyl-1-(propan-2-yl)bicyclo(3.1.0)hexan-3-one(1S,4R,5R)-4-methyl-1-propan-2-ylbicyclo(3.1.0)hexan-3-oneRefChem:50983CHEBI:50042208-912-2alpha-(-)-ThujoneThujon(-)-3-Isothujone(1S,4R,5R)-thujan-3-one(+-)-Isothujone(1S,4R,5R)-1-isopropyl-4-methylbicyclo[3.1.0]hexan-3-one3-Thujanone, (-)-
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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 546-80-5

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How CAS 546-80-5 is used on this site

CAS 546-80-5 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 546-80-5 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.