About this material
Cyclabute by IFF is a quietly opulent ingredient that brings a modern, textural richness to fine fragrance compositions.
Radiating a distinctive woody–amber signature, it unveils an unexpected fruity luminosity—succulent pineapple layered with velvety mango and sun-ripened peach—before melting into a subtle yet intriguing cocoa-chocolate nuance.
The result is a multifaceted olfactory profile that feels both indulgent and sophisticated, balancing brightness with depth.
Positioned beautifully within the heart of a fragrance, Cyclabute offers exceptional tenacity compared to traditional fruity esters, while remaining more nuanced and fluid than heavier lactones.
This makes it an invaluable tool for perfumers seeking to extend and refine the fruity core of a composition without overwhelming its structure.
Its character is smoother and less herbal-anise in tone than related materials such as Cyclacet or Cyclaprop, allowing for a more seamless integration into both contemporary and classic accords.
Technically refined, Cyclabute is a colourless liquid with a flashpoint of 94°C, demonstrating both stability and versatility in formulation.
On a blotter, its presence lingers elegantly for two days or more, gradually revealing its layered complexity over time.
For perfumers and fragrance houses aiming to craft creations that feel both luxurious and distinctive, Cyclabute offers a rare balance: radiant fruit, warm gourmand undertones, and a polished woody-amber foundation—an ingredient that elevates the heart of a fragrance into something truly memorable.
Scent character
Highlights from the material’s listed odour profile.
Note position
Heart note
Material character
A closer lookOdour strength
Not listed
Tenacity / substantivity
Not listed
Fragrance development
Heart note
Illustrative note development · no measured evaporation data
Molecular identity
C14H20O2
CAS-linked compound reference — 3a,4,5,6,7,7a-hexahydro-4,7-methano-1H-inden-5-yl isobutyrate
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
- 220.31 g/mol
- Reference IUPAC name
- 8-tricyclo[5.2.1.02,6]dec-4-enyl 2-methylpropanoate
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)
- 3.2
- Exact mass (Da)
- 220.146329876
- Monoisotopic mass (Da)
- 220.146329876
- Topological polar surface area (Ų)
- 26.3
- Complexity
- 332
- Formal charge
- 0
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 3
- Heavy atoms
- 16
- Isotope atoms
- 0
- Atom stereocentres
- 5
- Bond stereocentres
- 0
- Covalent units
- 1
- SMILES
- CC(C)C(=O)OC1CC2CC1C3C2CC=C3
- InChI
- InChI=1S/C14H20O2/c1-8(2)14(15)16-13-7-9-6-12(13)11-5-3-4-10(9)11/h3,5,8-13H,4,6-7H2,1-2H3
- InChIKey
- QNEXACLQEWOALO-UHFFFAOYSA-N
Reference data checked 2026-10-27.
CAS 67634-20-2 · 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 | 67634-20-2 |
|---|---|
| Odour description (decreasing) | Fruity, Pineapple, Cocoa, Peach, Mango, Amber. |
| Solvent | None |
| Physical state | Liquid |
| Synonyms | 3a,4,5,6,7,7a-hexahydro-4,7-methano-1h-inden-5(or 6)-yl isobutyrate |
Additional listed details
CAS No: 67634-20-2,
Safety & handling
Hazard statements:
- H411 Toxic to aquatic life with long lasting effects.
Precautionary statements:
- P391 Collect spillage.
- P501 Dispose of contents/container to an approved waste disposal plant.
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.Fruit with its peel
With citrus and leafy contrastsExplore a fruit sketch that includes a suggestion of peel or leaf. Compare those accents separately against the fruity reference, noticing whether they create a fresher impression or pull the idea away from the fruit you imagined.
An orchard in bloom
With rose or another familiar flowerPlace the fruity direction beside a simple floral accord. Keep a flower-only comparison and assess whether the fruit reads as a supporting accent, a juicy centre or a separate note that needs a different setting.
Fruit and cream
With vanilla and soft wood directionsSketch a more rounded fruit idea with vanilla as one variation and soft wood as another. Compare sweetness and texture before combining both, leaving room for the original fruity character to remain identifiable in the study.







Ellie Hodgson-Scribbins (verified owner) –
Perfect for sweet vanilla nuance in my gourmand blends!