About this material
Kephalis builds warmth through layers of dry wood, amber and softly cured tobacco.
Its character is rich and enveloping, with enough woody dryness to give the warmer facets definition.
The result is a material that can bring both depth and an expansive sense of volume to the heart and base of a fragrance.
Honeyed, herbal and subtly leathery nuances run through this woody-amber body, with a fine smoky edge adding shadow.
These facets make it especially rewarding in compositions that need texture: warm woods, tobacco, dark florals and resinous themes all offer different ways to explore its character.
Its persistent presence helps carry a woody theme through the dry-down.
Used as a supporting material, it can give a fragrance a fuller foundation; placed more prominently, its tobacco-amber warmth becomes an important part of the fragrance’s identity.
Odour profile
The main impression is warm, woody and ambery, with a rounded tobacco-like depth.
A honeyed softness gives the dry wood a gentle sweetness, while herbal and leathery touches add detail around its edges.
The smoky nuance is one element within this broader profile.
It is useful to think of the material as textured warmth: dry and softly sweet facets working together, with a lasting woody body beneath them.
Using Kephalis in perfumery
Use it to develop woody-amber bases, deepen tobacco accords and give aromatic compositions a warmer foundation.
In an oud-style accord, explore how its dry wood, tobacco and leather facets interact with darker resinous and earthy notes.
Kephalis also works well around floral themes such as rose, jasmine, violet and lavender.
Its warmth can give those notes a richer setting while allowing their individual character to remain clear.
Compare the opening, heart and dry-down when adjusting the balance, particularly where a light floral theme sits above a substantial woody base.
Creative pairings
Explore ISO E Super for an airy woody setting, or Cashmeran for a more textured woody-musky direction.
Cedar and patchouli can emphasise dryness and depth; sandalwood notes can soften the overall impression.
Rose and a restrained leathery accord offer a rich contrast to its tobacco warmth.
For a softer amber direction, explore benzoin or tonka notes, keeping the sweetness in proportion to the wood.
Lavender and aromatic herbs provide another route, bringing freshness and definition above the warm base.
Scent character
Highlights from the material’s listed odour profile.
Note position
Heart note · Base note
Material character
A closer lookOdour strength
(recommend smelling in a 10.00 % solution or less)
Listed qualitative strength
Tenacity / substantivity
96 hour(s)
at 100%
Listed reference conditions
Fragrance development
Heart note · Base note
Illustrative note development · no measured evaporation data
Molecular identity
C14H24O2
- Molecular weight
- 224.34 g/mol
- IUPAC name
- 4-(1-ethoxyethenyl)-3,3,5,5-tetramethylcyclohexan-1-one
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)
- 3.1
- Exact mass (Da)
- 224.177630004
- Monoisotopic mass (Da)
- 224.177630004
- Topological polar surface area (Ų)
- 26.3
- Complexity
- 280
- Formal charge
- 0
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 3
- Heavy atoms
- 16
- Isotope atoms
- 0
- Atom stereocentres
- 0
- Bond stereocentres
- 0
- Covalent units
- 1
- SMILES
- CCOC(=C)C1C(CC(=O)CC1(C)C)(C)C
- InChI
- InChI=1S/C14H24O2/c1-7-16-10(2)12-13(3,4)8-11(15)9-14(12,5)6/h12H,2,7-9H2,1,3-6H3
- InChIKey
- YLNYLLVKHRZLGO-UHFFFAOYSA-N
Reference data checked 2026-10-27.
This molecular reference matches the catalogue’s recorded CAS and formula. It does not confirm the supplied grade, purity, stereochemistry, isomer proportions, composition, impurities or unlisted constituents.
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 | 36306-87-3 |
|---|---|
| Odour description (decreasing) | Rich, Warm, Woody, Amber, Tobacco, Honeyed, Herbal, Leathery, Slightly Smoky |
| Odour strength | Medium (recommend smelling in a 10.00 % solution or less) |
| Perfumery use | Effective from the smallest traces, through to 8%Listed perfumery guidance; this is not an IFRA limit. |
| Substantivity | 96 hour(s) at 100% |
| Solvent | None |
| Physical state | Liquid |
| Synonyms | Woody Cyclohexanone, Tetramethyl Ethoxy Vinyl Cyclohexanone |
| Recorded name / preparation | 4-(1-ethoxyethenyl)-3, 3, 5, 5-tetramethylcyclohexan-1-one |
| Molecular formula | C₁₄H₂₄O₂ |
Safety & handling
Hazard statements:
- H315 Causes skin irritation.
- H411 Toxic to aquatic life with long lasting effects.
Precautionary statements:
- P264 Wash thoroughly after handling.
- P280 Wear protective gloves/protective clothing/eye protection/face protection.
- P273 Avoid release to the environment.
- P302+352 IF ON SKIN: Wash with soap and water.
- P332+313 If skin irritation occurs: Get medical advice/attention.
- P362 Take off contaminated clothing and wash before reuse.
- P501 Dispose of contents/container in accordance with local regulations.
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.Smoke and petals
With rose and a clear floral accordExplore a smoky rose sketch by setting the listed smoke character beside a familiar flower. Compare it with the rose alone, deciding whether the accent suggests a distant atmosphere, a charred edge or too much darkness.
Timber and embers
With sandalwood and dry wood directionsBuild a wood-focused study with the smoky material as the changing element. Compare a smooth wood setting with a drier one and keep notes on the difference between a recognisable timber impression and an abstract smoke effect.
A bright interruption
With bergamot and an aromatic openingTry citrus brightness as a deliberate contrast to the smoky direction. Compare a matching version without the citrus, then judge whether the opening creates a useful transition into smoke or belongs to a different composition.








Jayesh H. (verified owner) –
Added a tiny amount to some of my Oud accords and this stuff makes the overall smell dryer, more smoky and deep
Anis Dadou (verified owner) –
Another essential for modern loud oud recreations. Very sweet, and dries down to patchouli like.
Paul (verified owner) –
A nice warm honey like rich smell that adds a nice note to fragrances