Hedione
Fresh, Clean, Sweet, Floral, Jasmine. Diffusive & Fixative
About this material
Hedione by Firmenich is a synthetic fragrance compound widely used in perfumery, recently recognised for its pheromone like responses.
Hedione is a widely used fragrance ingredient in the perfume industry. Its popularity stems from its ability to provide a fresh and airy scent.
This compound, also known as methyl dihydrojasmonate, has a soft, fresh, and slightly floral scent reminiscent of jasmine, but with a more delicate and transparent character.
Hedione is often used in perfumes to enhance the longevity and diffusion of the fragrance.
Its versatility allows it to blend well with various other ingredients, making it a staple in many perfume formulations.
With its pleasant scent and performance benefits, Hedione continues to be a sought-after choice for perfumers worldwide.
It enhances and lifts floral notes in a composition, making them feel more natural and radiant.
Characteristics of Hedione:
- Scent Profile: Floral, airy, and slightly citrusy, with a jasmine-like quality.
- Effect: Acts as a modifier and enhancer, adding diffusion and luminosity.
- Volatility: Medium, with a long-lasting and subtle presence.
- Usage in Perfumery: Commonly found in floral, citrus, and fresh compositions, it is known for its ability to add naturalness and radiance to perfumes.
Notable Perfumes with Hedione:
- Eau Sauvage (Dior, 1966) – One of the first perfumes to showcase hedione.
- CK One (Calvin Klein, 1994) – A fresh, unisex fragrance.
- Acqua di Gio (Giorgio Armani, 1996) – A luminous aquatic fragrance.
Hedione along with ISO E Super has to be one of the most widely used aroma chemicals in all of modern day perfumery.
Hedione is also known to subtly stimulate the human pheromone receptors, which may contribute to its appeal in perfumery.
The assumption that hedione is attractive was all but confirmed by a 2015 paper published in the journal NeuroImage by cell physiologists from Bochum and Dresden in Germany.
Chemists found that it activates the putative pheromone receptor VN1R1, located in the olfactory epithelium and one of five still left in humans out of hundreds that occur in other mammals.
It’s the first time that a scent has been known to activate the pheromone receptor in humans.
The scientists then analysed brain activity to find out if the scent could have an impact on the brain, comparing the results with the control scent phenylethyl alcohol, a traditional floral fragrance; it activated brain areas in the limbic system, a part of the brain associated with emotions, memory and motivation, more strongly than the control.
But even more significantly, hedione activated a specific area of the hypothalamus in women, which in turn ignites the endocrine system, promoting a response to sexual cues.
Master perfumer Arcadi Boix Camps wrote of hedione ‘the compound that without a doubt has most influenced modern perfumery and has allowed the great artists to develop their ideas with inspiration… it has become famous because it gives to compositions a delicate, fresh, smooth, radiant, warm, elegant character that blends well with all kinds of perfumes from floral-citrics to woody, chypre and oriental.’ Today, it’s fame is cemented in science as well as art, a true icon of both worlds.
For those not familiar with Hedione, the raw material would appear to have a fairly quiet odour by itself. It is a middle note molecule, almost undetectable from the bottle and best appreciated after appropriate dilution or when incorporated into a blend.
For the untrained nose, Hedione may be difficult to detect in isolation
Scent character
Highlights from the material’s listed odour profile.
Note position
Top note · Heart note
Material character
A closer lookOdour strength
(recommend smelling in a 10% solution or less)
Listed qualitative strength
Tenacity / substantivity
72 hour(s)
at 100%
Listed reference conditions
Fragrance development
Top note · Heart note
Illustrative note development · no measured evaporation data
Molecular identity

C13H22O3
CAS-linked compound reference — Hedione
This compound record is linked to the explicitly recorded CAS number. It is not supplier confirmation of the supplied grade, purity, stereochemistry, isomer proportions or complete composition.
- Reference molecular weight
- 226.31 g/mol
- Reference IUPAC name
- methyl 2-(3-oxo-2-pentylcyclopentyl)acetate
More compound properties
Computed and structural reference properties for the named compound. These are not measured supplier specifications or properties of a complete dilution, mixture or batch.
- XLogP (computed)
- 2.7
- Exact mass (Da)
- 226.15689456
- Monoisotopic mass (Da)
- 226.15689456
- Topological polar surface area (Ų)
- 43.4
- Complexity
- 248
- Formal charge
- 0
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 3
- Rotatable bonds
- 7
- Heavy atoms
- 16
- Isotope atoms
- 0
- Atom stereocentres
- 2
- Bond stereocentres
- 0
- Covalent units
- 1
- SMILES
- CCCCCC1C(CCC1=O)CC(=O)OC
- InChI
- InChI=1S/C13H22O3/c1-3-4-5-6-11-10(7-8-12(11)14)9-13(15)16-2/h10-11H,3-9H2,1-2H3
- InChIKey
- KVWWIYGFBYDJQC-UHFFFAOYSA-N
Reference data checked 2026-10-27.
CAS 24851-98-7 · reference checked 2026-10-27.
Fragrance allergen reference
Generic regulatory reference only. This is not a supplier allergen declaration, measured composition, allergen-free claim or finished-product labelling assessment.
Raw-material reference based on recorded CAS numbers. A CAS match identifies a reference entry; it does not verify the supplied grade, composition, purity or finished-product compliance. Naturals, bases and mixtures require composition review.
European Union / Northern Ireland
No direct listed-entry CAS match in this jurisdiction’s held reference set. This does not mean the material is allergen-free. Constituents, grouped entries and natural-material composition may require further review.
Finished-cosmetic declaration thresholds: greater than 0.001% leave-on; greater than 0.01% rinse-off. Apply the current target-market rules to the actual complete formulation; no concentration is inferred here.
Commission Regulation (EU) 2023/1545 · Regulation (EU) 2023/1545 with 11 November 2025 corrigendum; checked 2026-10-26.
Held EU transition dates: placing noncompliant products on the market until 2026-07-31; making them available until 2028-07-31. Check applicability and current law for the intended market. 2025 corrigendum.
Great Britain
No direct listed-entry CAS match in this jurisdiction’s held reference set. This does not mean the material is allergen-free. Constituents, grouped entries and natural-material composition may require further review.
Finished-cosmetic declaration thresholds: greater than 0.001% leave-on; greater than 0.01% rinse-off. Apply the current target-market rules to the actual complete formulation; no concentration is inferred here.
Regulation (EC) No 1223/2009, Annex III (Great Britain) · legislation.gov.uk current text checked 2026-10-26.
Current supplier composition or allergen declarations are required to assess naturals, bases, mixtures and actual concentrations. Reference data checked 2026-10-26; bundle 2026-10-27. Supplementary private documents remain separate.
Product specification
| CAS number | 24851-98-7 |
|---|---|
| Odour description (decreasing) | Fresh, Clean, Sweet, Floral, Jasmine. Diffusive & Fixative |
| Odour strength | Medium (recommend smelling in a 10% solution or less) |
| Perfumery use | Up to 30% in the fragrance concentrateListed perfumery guidance; this is not an IFRA limit. |
| Substantivity | 72 hour(s) at 100% |
| Solvent | None |
| Physical state | Liquid |
| Synonyms | Methyl Dihydrojasmonate, Hedione Firmenich |
Safety & handling
Not Hazardous According To EC 1272/2008
Professional/Industrial use only.
Datasheets & customer documents
Available documents are attached to eligible completed orders in your account.
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Supplementary documents are supplied only where explicitly listed and available. Check documentation information
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Documentation Supply PolicyIFRA formulation guide
Generic reference only — not an IFRA certificate, compliance decision or use recommendation. The Responsible Person and qualified safety assessor must assess the actual finished formula using current applicable IFRA Standards, supplementary documentation where available and the CPSR.
Raw-material reference based on recorded CAS numbers. A CAS match identifies a reference entry; it does not verify the supplied grade, composition, purity or finished-product compliance. Naturals, bases and mixtures require composition review.
Source: 51st Amendment overview, held source checked 2026-10-21. Bundle 2026-10-27. Individual Standards prevail over the overview.
No direct IFRA overview entry matched the recorded CAS in this held dataset. This does not mean unrestricted use, absence of relevant Standards or compliance. Constituent restrictions may still apply.
IFRA source overview · Individual IFRA Standards and supplementary documentation
Supplier certificates and private documents are separate evidence. Their availability does not determine whether this generic guide is shown. This is a dated local reference, not a live regulatory feed.
Creative ideas to explore
Creative directions, not tested formulas.Petals and peel
With bergamot and a light citrus ideaExplore a brighter version of the floral character using a simple citrus counterpoint. Compare it with the unchanged flower accord and note whether the citrus frames the bloom or becomes the main subject of the sketch.
Stem and blossom
With geranium and leafy notesSketch the flower with a greener setting, keeping leaf and blossom as distinct ideas. Compare a clean floral reference with the greener version to decide how much of the imagined stem and garden belongs in the composition.
Petals over wood
With a transparent wood directionPlace the floral material against a spare wood backdrop and follow the balance through the evaluation. Try a softer wood variation separately, then choose whether your flower needs an open, airy setting or a smoother, more enveloping frame.






Franca Tulino (verified owner) –
Ryan (verified owner) –
Luis Sagra (verified owner) –
Fast delivery, high quality products
Antonio Turiello – Sky Princess – Technical dept. Turiello (verified owner) –
In terms of clean , I would say that is really making his job in the fragrance, that sweet jasmine touch make feel so good . I think it can be blended really nicely in marine fragrance which i really love, using also the woody and creamy notes of the polysantol and Texas Cedarwood.
Paul Ensell (verified owner) –
Adding an extra layer to the roof of your fragrances. Gifting it a lift and a little top activity
Ellie Hodgson-Scribbins (verified owner) –
Irreplaceable in adding lift and radiance to jasmine blends, I use all the time
Abbie Graham (verified owner) –
Hedione offers a sheer, jasmine-like aroma but much more transparent and less indolic than natural jasmine absolute. It’s floral, slightly citrusy and gives off a gentle, almost watery glow, as if jasmine were basking in sunlight. It doesn’t shout; it illuminates. Hedione is less about the scent itself and more about what it does to a fragrance: it adds diffusion, lift, and an almost luminous aura.
What makes Hedione special is its “feel-good” quality. It evokes a clean, fresh, almost euphoric sensation.
In terms of performance, Hedione is not a powerhouse. In isolation, its projection is soft, and longevity is moderate, but in blends, it enhances and elevates surrounding notes beautifully.
Hedione is not flashy, but it’s indispensable. Like light through a window, it brings life and dimension to any fragrance it touches.