About this material
Z11 HD is a high-purity, sustainable fragrance molecule developed by Firmenich, renowned for its intense, tenacious dry woody aroma with an elegant ambery facet.
This ‘High Definition’ version is a refined iteration of the original Z11, offering enhanced olfactory performance and environmental benefits.
It offers a powerful and persistent dry woody scent with a refined amber touch, surpassing the standard version of this material in cleanliness and intensity.
With a minimum content of 95% of the superior isomer (three times more than the usual quality), this version significantly enhances the sensuality and consistency of fragrances.
Originally made from Manool as a starting material, which was extracted from a tree (Manao) in New Zealand, now produced by biotechnology.
Scent character
Highlights from the material’s listed odour profile.
Note position
Heart note · Base note
Material character
A closer lookOdour strength
Listed qualitative strength
Tenacity / substantivity
384 hour(s)
at 100%
Listed reference conditions
Supplied strength is 1% in DPG.
Fragrance development
Heart note · Base note
Illustrative note development · no measured evaporation data
Molecular identity
![2D structure of the named compound 5H-3,5a-Epoxynaphth[2,1-c]oxepin, dodecahydro-3,8,8,11a-tetramethyl-](https://perfumeextract.co.uk/wp-content/plugins/pe-material-profiles/assets/molecular/reference-93639.png)
C18H30O2
CAS-linked compound reference — 5H-3,5a-Epoxynaphth[2,1-c]oxepin, dodecahydro-3,8,8,11a-tetramethyl-
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.
Named active material only. These properties do not describe the complete supplied dilution or carrier.
- Reference molecular weight
- 278.4 g/mol
- Reference IUPAC name
- 5,5,9,13-tetramethyl-14,16-dioxatetracyclo[11.2.1.01,10.04,9]hexadecane
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)
- 4.7
- Exact mass (Da)
- 278.224580195
- Monoisotopic mass (Da)
- 278.224580195
- Topological polar surface area (Ų)
- 18.5
- Complexity
- 431
- Formal charge
- 0
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 0
- Heavy atoms
- 20
- Isotope atoms
- 0
- Atom stereocentres
- 5
- Bond stereocentres
- 0
- Covalent units
- 1
- SMILES
- CC1(CCCC2(C1CCC34C2CCC(O3)(OC4)C)C)C
- InChI
- InChI=1S/C18H30O2/c1-15(2)8-5-9-16(3)13(15)7-11-18-12-19-17(4,20-18)10-6-14(16)18/h13-14H,5-12H2,1-4H3
- InChIKey
- PHNCACYNYORRNS-UHFFFAOYSA-N
Reference data checked 2026-10-27.
CAS 57345-19-4 · 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 undiluted material reference. These data refer to the named active material, not the complete supplied dilution. A raw-material IFRA ceiling is not a use level for this diluted product. The assessor must account for the actual concentration, carrier and all other formula contributions.
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 | 57345-19-4 |
|---|---|
| Odour description (decreasing) | Powerful, Intense, Clean, Ambery, Dry Woods, Earthy |
| Odour strength | Medium |
| Perfumery use | Effective from the smallest traces through to 1%Listed perfumery guidance; this is not an IFRA limit. |
| Substantivity | 384 hour(s) at 100% |
| Solvent | DPG to give a 1% solution of Z11 HD 992956 |
| Physical state | Liquid |
| Synonyms | Z11 |
| Recorded name / preparation | (+)-(1R,4S,9S,10R,13S)-5,5,9,13-tetramethyl-14,16-dioxatetracyclo[11.2.1.0~1,10~.0~4,9~]hexadecane |
| IFRA document scope | Where an IFRA document is shared with the raw material, it refers to the raw, undiluted material. It is supplied as a reference for this diluted product; its stated limits are not limits for the supplied dilution. Check the document scope and assess the intended finished formulation. This notice does not confirm that a document is available. |
Safety & handling
Hazard statements:
- H315 Causes skin irritation.
Hazard Inducers:
- 5H-3,5a-Epoxynaphth[2,1-c]oxepin, dodecahydro-3,8,8,11a-tetramethyl-
Precautionary statements:
- P264 Wash thoroughly after handling.
- P280 Wear protective gloves/protective clothing/eye protection/face protection.
- P302+P352 IF ON SKIN: Wash with plenty of soap and water.
- P332+P313 If skin irritation occurs: Get medical advice/attention.
- P362 Take off contaminated clothing and wash before reuse.
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
Purchased as a guest? Follow the SDS request guidance in our Documentation Supply Policy and provide proof of purchase.
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 undiluted material reference. These data refer to the named active material, not the complete supplied dilution. A raw-material IFRA ceiling is not a use level for this diluted product. The assessor must account for the actual concentration, carrier and all other formula contributions.
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.Amber in daylight
With bergamot and dry woodsExplore a brighter amber sketch with a citrus opening and a dry wood outline. Compare a spare version with a richer one, checking whether the amber character remains legible once the opening has moved on.
Petals after dark
With rose and a restrained spice ideaPlace the amber direction around a familiar rose accord. Add the spice idea as a separate variation, then compare both against the flower alone to decide whether you prefer warmth, contrast or a clearer floral centre.
Soft resin study
With resinous and vanilla directionsSketch a rounded amber using resinous and vanilla references as separate creative options. Compare the sweetness and texture of each, then decide whether your imagined amber should suggest dry balsam, soft vanilla or a balance between them.







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