About this material
Indolarome is a refined crystalline ingredient that brings a subtle yet distinctive character to modern perfumery.
Inspired by the classic tonalities of indolic materials, it offers a softer, more nuanced interpretation—less intense than traditional indole or skatole, yet beautifully balanced and versatile.
Its profile reveals a delicate interplay of civet-like warmth and gentle floralcy, enriched with earthy undertones, soft animalic accents, and a whisper of worn leather.
This creates an elegant depth that enhances compositions without overwhelming them, making it an ideal choice for perfumers seeking sophistication with restraint.
Particularly at home in white floral accords, Indolarome pairs effortlessly with jasmine, adding dimension and a refined naturalism.
Where indole can sometimes feel dense or overpowering, Indolarome introduces a subtle radiance—a crystalline “sparkle” that lifts and illuminates the composition.
A quietly luxurious material, Indolarome by IFF is perfect for crafting fragrances that balance sensuality with clarity, offering depth, texture, and a modern elegance that resonates beautifully in fine fragrance creations.
Scent character
Highlights from the material’s listed odour profile.
Note position
Base note
Material character
A closer lookOdour strength
(Recommend smelling in a 1% solution or less)
Listed qualitative strength
Tenacity / substantivity
400 hour(s)
at 10%
Listed reference conditions
Fragrance development
Base note
Illustrative note development · no measured evaporation data
Molecular identity

C11H12O2
CAS-linked compound reference — 4,4a,5,9b-Tetrahydroindeno(1,2-d)-1,3-dioxin
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
- 176.21 g/mol
- Reference IUPAC name
- 4,4a,5,9b-tetrahydroindeno[1,2-d][1,3]dioxine
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)
- 1.6
- Exact mass (Da)
- 176.083729621
- Monoisotopic mass (Da)
- 176.083729621
- Topological polar surface area (Ų)
- 18.5
- Complexity
- 193
- Formal charge
- 0
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 0
- Heavy atoms
- 13
- Isotope atoms
- 0
- Atom stereocentres
- 2
- Bond stereocentres
- 0
- Covalent units
- 1
- SMILES
- C1C2COCOC2C3=CC=CC=C31
- InChI
- InChI=1S/C11H12O2/c1-2-4-10-8(3-1)5-9-6-12-7-13-11(9)10/h1-4,9,11H,5-7H2
- InChIKey
- CZSXBBWOROMVEW-UHFFFAOYSA-N
Reference data checked 2026-10-27.
CAS 18096-62-3 · 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 | 18096-62-3 |
|---|---|
| Odour description (decreasing) | Animal, Indole, Skatole, Civet, Leather, Earthy, Jasmine |
| Odour strength | High (Recommend smelling in a 1% solution or less) |
| Perfumery use | Effective from the smallest traces up to 10%Listed perfumery guidance; this is not an IFRA limit. |
| Substantivity | 400 hour(s) at 10% |
| Solvent | None |
| Physical state | Solid |
| Synonyms | Indoflor, 4,4a,5,9b-tetrahydroindeno[1,2-d][1,3]dioxine, Indoflor Crystals |
Safety & handling
Signal word: Warning
Hazard statements:
- H316 Causes mild skin irritation.
Precautionary statements:
- P332 + P313: If skin irritation occurs: Get medical advice/ attention.
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-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.Suede and petals
With rose and a soft floral directionExplore a leather concept with a floral centre rather than a purely dark setting. Compare the flower alone with the leather variation, deciding whether the contrast evokes soft suede, a darker hide impression or an unexpected abstraction.
Leather in daylight
With bergamot and dry woodsSketch a brighter leather opening with citrus and a restrained wood backdrop. Evaluate a version without the citrus alongside it, observing whether the lighter opening supports the leather idea or changes the subject of the composition.
A warmer texture
With amber and smooth wood directionsSet the listed leather character against amber and soft wood as separate options. Compare their effect on texture before combining them, keeping a simple leather reference so the study remains about deliberate contrast rather than added complexity.






Simon Ilinkin (verified owner) –