Galbascone TOCO
Green, Galbanum, Fresh, Hyacinth-Floral, Ozonic, Juicy Pineapple, Light Leafy/Vegetal
About this material
CAS No: 56973-85-4
Odour Description (decreasing): Green, Galbanum, Fresh, Hyacinth-Floral, Ozonic, Juicy Pineapple, Light Leafy/Vegetal
Odour Strength: Medium
Usage: Effective from ultra small traces through to 0.1%
Substantivity: 48 hour(s) at 100%
Solvent: None
Synonyms: Dynascone, Verdascone, 1-(5,5-Dimethylcyclohex-1-en-1-yl)pent-4-en-1-one
Name: 1-(3,3-dimethylcyclohex-1-en-1-yl)pent-4-en-1-one/1-(5,5- dimethyl-1-cyclohexen-1-yl)pent-4-en-1-one
Molecular Formula: C₁₃H₂₀O
IFRA:
Scent character
Highlights from the material’s listed odour profile.
Note position
Top note · Heart note
Material character
A closer lookOdour strength
Listed qualitative strength
Tenacity / substantivity
48 hour(s)
at 100%
Listed reference conditions
Fragrance development
Top note · Heart note
Illustrative note development · no measured evaporation data
Molecular identity
C13H20O
- Molecular weight
- 192.3 g/mol
- IUPAC name
- 1-(5,5-dimethylcyclohexen-1-yl)pent-4-en-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)
- 3.6
- Exact mass (Da)
- 192.151415257
- Monoisotopic mass (Da)
- 192.151415257
- Topological polar surface area (Ų)
- 17.1
- Complexity
- 258
- Formal charge
- 0
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 1
- Rotatable bonds
- 4
- Heavy atoms
- 14
- Isotope atoms
- 0
- Atom stereocentres
- 0
- Bond stereocentres
- 0
- Covalent units
- 1
- SMILES
- CC1(CCC=C(C1)C(=O)CCC=C)C
- InChI
- InChI=1S/C13H20O/c1-4-5-8-12(14)11-7-6-9-13(2,3)10-11/h4,7H,1,5-6,8-10H2,2-3H3
- InChIKey
- OEVIJAZJVZDBQL-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 | 56973-85-4 |
|---|---|
| Odour description (decreasing) | Green, Galbanum, Fresh, Hyacinth-Floral, Ozonic, Juicy Pineapple, Light Leafy/Vegetal |
| Odour strength | Medium |
| Perfumery use | Effective from ultra small traces through to 0.1%Listed perfumery guidance; this is not an IFRA limit. |
| Substantivity | 48 hour(s) at 100% |
| Solvent | None |
| Physical state | Liquid |
| Synonyms | Dynascone, Verdascone, 1-(5,5-Dimethylcyclohex-1-en-1-yl)pent-4-en-1-one |
| Recorded name / preparation | 1-(3,3-dimethylcyclohex-1-en-1-yl)pent-4-en-1-one/1-(5,5- dimethyl-1-cyclohexen-1-yl)pent-4-en-1-one |
| Molecular formula | C₁₃H₂₀O |
Safety & handling
Contains: 56973-85-4 1-(5,5-dimethyl-1-cyclohexen-1-yl)pent-4-en-1-one
Hazard statements:
- H317 May cause an allergic skin reaction.
- H411 Toxic to aquatic life with long lasting effects.
Precautionary statements:
- P261 Avoid breathing mist or vapours.
- P280 Wear protective gloves.
- P302+P352 IF ON SKIN: Wash with plenty of water.
- P333+P313 If skin irritation or rash occurs: Get medical advice/ attention.
- 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.
1-(5,5-Dimethyl-1-cyclohexen-1-yl)pent-4-en-1-one
RESTRICTION · CAS 56973-85-4
Category 4 — fine fragrance: 1.1% in the finished consumer product
All applicable specification, purity and other Standard conditions must also be met.
All IFRA categories and Standard conditions
| Category 1 | 0.19% in the finished consumer product |
|---|---|
| Category 2 | 0.057% in the finished consumer product |
| Category 3 | 0.18% in the finished consumer product |
| Category 4 | 1.1% in the finished consumer product |
| Category 5A | 0.27% in the finished consumer product |
| Category 5B | 0.27% in the finished consumer product |
| Category 5C | 0.27% in the finished consumer product |
| Category 5D | 0.091% in the finished consumer product |
| Category 6 | 0.54% in the finished consumer product |
| Category 7A | 0.54% in the finished consumer product |
| Category 7B | 0.54% in the finished consumer product |
| Category 8 | 0.091% in the finished consumer product |
| Category 9 | 1.4% in the finished consumer product |
| Category 10A | 1.4% in the finished consumer product |
| Category 10B | 3.4% in the finished consumer product |
| Category 11A | 0.091% in the finished consumer product |
| Category 11B | 0.091% in the finished consumer product |
| Category 12 | No numeric restriction in this overview cell; review the full Standard and other applicable requirements. |
CAS numbers (comment): The scope of this Standard includes, but is not limited to the CAS number(s) indicated above; any other CAS number(s) used to identify this fragrance ingredient should be considered in scope as well.
Contributions from other sources: None to consider
Flavor use consideration: Due to the possible ingestion of small amounts of fragrance ingredients from their use in products in Categories 1 and 6, materials must not only comply with IFRA Standards but must also be recognized as safe as a flavoring ingredient as defined by the IOFI Code of Practice (www.iofi.org). For more details see chapter 1 of the Guidance for the use of IFRA Standards.
IFRA Standard type: RESTRICTION
Intrinsic property driving the risk management measure: DERMAL SENSITIZATION AND SYSTEMIC TOXICITY
Amendment revised: 49
Existing creations deadline: February 10, 2022
New creations deadline: February 10, 2021
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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