Isolongifolanone

Givaudan

Available

neat or unspecified

single substance

Short profile

Olfactory Family according to source: WOODY. The documented product profile combines ambery, woody, dry, fresh.

woody

ambery

woody

dry

fresh

Effect in a formula

Woody building block

Structure provider

Drydown modifier

Can define the woody axis, structure the drydown and connect floral or amber parts; the specific dominance is dosage-dependent.

From the source: Contributions explicitly identifiable in the source text: more radiance.

Use and dosage

Manufacturer's specification for this product grade: Up to 15%. This is not an IFRA limit. Low: contours the drydown. Medium: builds a recognizable woody axis. High: can mask floral or fresh parts and make the accord drier or more massive.

Up to 15%

Manufacturer use guidance for this exact product — not an IFRA limit. IFRA standards must be verified separately for the specific substance scope and product grade.

Behaviour and performance

Diffusionhigh – explicit source description

TenacitySeveral days

Reported as stated by the source. Diffusion, tenacity and note impact are not combined into a single performance score.

Good areas of use

Amber

Woody accords

Chemical context

CAS23787-90-8

Chemical name1,3,4,6,7,8a-Hexahydro-1,1,5,5-tetramethyl-2H-2,4a-methanonaphthalen-8(5H)-one

FormulaC15H24O

Molecular weight220.4 g/mol

Function classKetone

No vapour pressure with an explicitly reported temperature.

No vapor pressure classification: A reliable numerical vapor pressure with explicitly documented measurement temperature is missing.

Source: Givaudan Fragrance Molecules – Isolongifolanone

Open source

Last reviewed: 2026-09-07