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CAS 489-40-7 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

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InventoryRef 4049402/03/2011

OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE

(1aR-(1aa,4a,4ab,7ba))-1a,2,3,4,4a,5,6,7b-Octahydro-1,1,4,7-tetramethyl-1H-cycloprop(E)azulene

OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 489-40-7

CAS 489-40-7PubChem CID 15560276

(-)-alpha-Gurjunene

(-)-alpha-gurjunene is a carbotricyclic compound and sesquiterpene that is 1a,2,3,4,4a,5,6,7b-octahydro-1H-cyclopropa[e]azulene which is substituted by methyl groups at positions 1, 1, 4 and 7 (the 1aR,4R,4aR,7bS- diastereoisomer). It has been isolated from several plant species such as Anaphalis nubigena and Jatropha ribifolia. It has a role as a volatile oil component, an antibacterial agent and a plant metabolite. It is a sesquiterpene and a carbotricyclic compound. It is an enantiomer of a (+)-alpha-gurjunene. — ChEBI

IUPAC name: (1aR,4R,4aR,7bS)-1,1,4,7-tetramethyl-1a,2,3,4,4a,5,6,7b-octahydrocyclopropa[e]azulene

Molecular formula: C15H24
Molecular weight: 204.35 g/mol
Exact mass: 204.187800766 Da
XLogP3: 4.1
Topological polar surface area: 0.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 0
Covalent units: 1
Defined stereocentres: 4

Also known as

(1aR,4R,4aR,7bS)-1,1,4,7-tetramethyl-1a,2,3,4,4a,5,6,7b-octahydro-1H-cyclopropa[e]azuleneCHEBI:61699(-)-.alpha.-Gurjunene1,1,4,7-tetramethyl-1a,2,3,4,4a,5,6,7b-octahydrocyclopropa(e)azulene1,1,4,7-tetramethyl-1a,2,3,4,4a,5,6,7b-octahydrocyclopropa[e]azulene(1aR,4R,4aR,7bS)-1,1,4,7-tetramethyl-1a,2,3,4,4a,5,6,7b-octahydro-1H-cyclopropa(e)azuleneRefChem:67690alpha-Gurjunene

10 more reported names

Gurjunenealpha-gurjenenealpha-gurujeneiota-gurjunenea-gurjuneneGurjunene-alphaSPCXZDDGSGTVAW-XIDUGBJDSA-N1H-cycloprop[e]azulene,1abeta,2,3,4,4aalpha,5,6,7bbeta-octahydro-1,1,4beta,7-tetramethyl1H-cyclopropa[e]azulene, 1a,2,3,4,4a,5,6,7b-octahydro-1,1,4,7-tetramethyl1H-cycloprop[e]azulene,1a,2,3,4,4a,5,6,7b-octahydro-1,1,4,7-tetramethyl-,[1aR-(1aalpha,4alpha,4abeta,7balpha)]-

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:61699
EPA DTXSID:DTXSID0052126
PubMed:10190971

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

Inventory details for OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE

INCI name

OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE

Description

(1aR-(1aa,4a,4ab,7ba))-1a,2,3,4,4a,5,6,7b-Octahydro-1,1,4,7-tetramethyl-1H-cycloprop(E)azulene

Record provenance

Inventory reference: 40494
Imported identity: OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE
Source update: 02/03/2011

European Commission CosIng source notes

Annex records for OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE

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Key data

CAS

489-40-7

207-695-1

Restriction

—

Function

PERFUMING: Used for perfume and aromatic raw materials.

Ingredients with overlapping formulation functions

OCTAHYDRO-TETRAMETHYL-METHANO-CYCLOPENTACYCLOPROPABENZENE-4-METHANOL FORMATEPERFUMING

OCTAHYDRO-TETRAMETHYL-METHANOAZULENEPERFUMING

OCTAHYDRO-TETRAMETHYL-METHANOAZULENONEPERFUMING

OCTAHYDRO-TETRAMETHYLCYCLOPROPANAPHTHALENONEPERFUMING

OCTAHYDRO-TRIMETHYL-ETHANO-NAPHTHOXIRENEPERFUMING

OCTAHYDRO-TRIMETHYL-NAPHTHOXIREN-7-OLPERFUMING

OCTAHYDRO-TRIMETHYLSPIRO-METHANOAZULENE-6,2'-OXIRANEPERFUMING

OCTAHYDROCOUMARINPERFUMING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE appears in the CosIng inventory

The CosIng inventory lists OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE carries the following function designation(s):

PERFUMING

CAS 489-40-7 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE

This page reproduces the CosIng inventory entry for OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research OCTAHYDRO-TETRAMETHYLCYCLOPROPAZULENE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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