About this material
Undecavertol is the perfumer’s green maestro — a synthetic aroma chemical engineered to crystallise the delicate, dewy essence of fresh violet leaf and garden greenery with crystalline clarity. Unlike heavier or wax‑laden natural absolutes, it delivers a transparent, rain‑kissed green note that lifts and modernises compositions.
In fine fragrance creation, this molecule acts as both a fresh top note enhancer and a heart‑note modifier, weaving subtle floral and fruity undertones into complex accords. Its versatility shines in contemporary florals, chypres, aromatic fougères, and innovative green bouquets, where clean, evocative freshness is paramount.
Undecavertol is a top‑to‑heart accord co‑modifier that breathes transparent freshness into fragrances. It is used by perfumers to impart:
- Crisp green foliage effects
- Violet leaf nuance without waxy detritus
- Juicy accents in fruity and floral accords
Typical professional usage levels range from trace amounts up to ~0.5 % in fine fragrance compositions (higher in functional scent products), depending on the desired green impact and blend balance.
Givaudan describe Undecavertol as being developed in connection with structural elucidation work on unknown trace components of lily-of-the-valley. It has a powerful green-floral character, somewhat related to lily-of-the-valley, with natural, fresh, fruity violet leaf and linden-blossom aspects. It can be used successfully in rose and fruity pear accords.
Although easy to use in most perfumery types, Undecavertol requires careful dosage and blending due to its exceptional strength.
Remarkably persistent for a green note, with a lasting green‑fresh impression on blotter beyond 24 hours and real‑world presence through heart and dry‑down stages.
Scent character
Highlights from the material’s listed odour profile.
Note position
Top note · Heart note
Material character
A closer lookOdour strength
, but highly diffusive
Listed qualitative strength
Tenacity / substantivity
31 hour(s)
at 100%
Listed reference conditions
Fragrance development
Top note · Heart note
Illustrative note development · no measured evaporation data
Molecular identity
C11H22O
- Molecular weight
- 170.29 g/mol
- IUPAC name
- 4-methyldec-3-en-5-ol
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)
- 3.8
- Exact mass (Da)
- 170.167065321
- Monoisotopic mass (Da)
- 170.167065321
- Topological polar surface area (Ų)
- 20.2
- Complexity
- 127
- Formal charge
- 0
- Hydrogen bond donors
- 1
- Hydrogen bond acceptors
- 1
- Rotatable bonds
- 6
- Heavy atoms
- 12
- Isotope atoms
- 0
- Atom stereocentres
- 1
- Bond stereocentres
- 1
- Covalent units
- 1
- SMILES
- CCCCCC(C(=CCC)C)O
- InChI
- InChI=1S/C11H22O/c1-4-6-7-9-11(12)10(3)8-5-2/h8,11-12H,4-7,9H2,1-3H3
- InChIKey
- WSTQLNQRVZNEDV-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 | 81782-77-6 |
|---|---|
| Odour description (decreasing) | Fresh, Green, Crisp, Violet Leaf, Floral, Lily of the Valley, Subtle Fruity, Pear, Kiwi |
| Odour strength | Medium, but highly diffusive |
| Perfumery use | Effective from the smallest traces, through to 0.5%Listed perfumery guidance; this is not an IFRA limit. |
| Substantivity | 31 hour(s) at 100% |
| Solvent | None |
| Physical state | Liquid |
| Synonyms | 4‑methyldec‑3‑en‑5‑ol, Violet Decenol, Methyl Decenol, Figovert |
| Recorded name / preparation | 4‑methyl-3-decen‑5‑ol |
| Molecular formula | C₁₁H₂₂O |
| Supplier IFRA information | Catalogue copy mentions IFRA information, but no reviewed supplier-document record is available in this profile. No certificate, use limit or compliance status is confirmed. |
Additional listed details
CAS No: 81782‑77‑6
Safety & handling
Hazard statements:
- H411 Toxic to aquatic life with long lasting effects.
Precautionary statements:
- P273 Avoid release to the environment.
- 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.Leaf and blossom
With rose and garden floralsExplore a green floral sketch around a clear flower reference. Compare the leafy accent with the flower alone and decide whether the scene suggests a cut stem, a growing garden or a greener abstraction you want to develop.
Peel and leaf
With bergamot and herbal directionsUse citrus as a bright setting for the green material, then try an herbal alternative as a separate variation. Keeping those contrasts apart makes it easier to choose between a peel-focused idea and a leafy cologne.
A shaded wood
With transparent woods and soft muskSketch a green wood direction with a restrained backdrop. Follow the leafy character as the study develops, comparing a wood-only reference to decide whether the scene suggests fresh branches, shaded timber or a softer woodland impression.







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