RUŌOD Lab

Traseolide

Aroma chemical · Musky / Woody

musky, sweet, woody, powdery — base note.

Aroma illustration for Traseolide: soft white clouds, a cut log and a powder puff and fine powder, for its musky, woody and powdery notes. It illustrates smell associations, not the material or its source.Skeletal formula of Traseolide, C18H26O, drawn from PubChem's 2D record. Stereochemistry is not shown.
Aroma View: an illustration of what Traseolide smells like (musky, woody, powdery), drawn by RUŌOD Lab — not its appearance or its source.Skeletal formula drawn by RUŌOD Lab from PubChem's 2D record (CID 91696). Stereochemistry is not shown; the coloured background is decoration.
Images

By the RUŌOD Lab TeamRevision 1Updated

In short

Traseolide is a trade name for an acetyl indane polycyclic musk with a sweet, slightly woody musk odour. It is used as a long-lasting musk in functional and fine fragrance.

What Traseolide smells like

Traseolide (ATII) is a sweet, powdery musk with a warm, amber-like undertone, in a perfumery glossary, which finds it warmer and sweeter than its polycyclic siblings — closer to the old nitro musks, more 'golden' than 'clean'. Few other descriptions were found. Fraterworks describes a plush, velvety musk with creamy, sandalwood-like facets and a warm amber-sweet base — creamier than the sharper polycyclic musks — and a fixative and blending agent that softens harsh notes, stable in alkaline products.

Leading note
Warm sweet musk
Supporting facets
Powdery, amber
Character
Warm, sweet, soft
  • musky
  • sweet
  • woody
  • powdery

What makes Traseolide distinctive

The golden polycyclic musk: warmer and sweeter, nearer the nitro musks than the clean ones.

Concentration and dilution

Fraterworks gives 10% as its working dilution.

How Traseolide is used

Used as a warm, golden musk base in functional and fine fragrance.

Typical role: fixative (slow to evaporate; helps a blend last and holds lighter notes).

How Traseolide differs from similar materials

Tonalide
Tonalide is drier and more powdery; Traseolide is warmer and more golden.
Musk Ketone
A glossary finds Traseolide closer to the old nitro musks such as musk ketone in character.

An asterisk marks a difference that a cited source states directly. The others compare the published descriptions of each material. Smell varies with grade, supplier and dilution; compare them side by side on blotters before substituting one for another.

Formulation considerations

Polycyclic musks are persistent in the environment; check current regulatory guidance for your market.

Identity and classification

Type
Aroma chemical
Origin
Synthetic
Odour family
Musky / Woody
Note position
Base note
Physical form at room temperature
Viscous liquid
Also known as
ATII
CAS number
68140-48-7
Molecular formula
C18H26O
Molecular weight
258.4 g/mol
IUPAC name
1-(1,1,2,6-tetramethyl-3-propan-2-yl-2,3-dihydroinden-5-yl)ethanone

The CAS number, formula and molecular weight are taken from PubChem compound 91696, whose own record lists this CAS number; checked 19 October 2026.

Safety and compliance

Hazard classification of the neat substance, as PubChem summarises it, read 26 October 2026. Companies notifying the ECHA C&L Inventory classify it (1,609 reports): H302 harmful if swallowed (100% of reports). Unless it is harmonised, this is the notifiers' own classification, not a binding one.

This page is general information, not a safety assessment or a specification. Confirm identity, composition, IFRA status and allergen content from your supplier's documents for the lot you hold.

Materials it works with

  • Galaxolide

    Aroma chemical · Musky / Floral — musky, clean, sweet, floral

  • Tonalide

    Aroma chemical · Musky / Powdery — musky, powdery, sweet, woody

  • Celestolide

    Aroma chemical · Musky / Powdery — musky, sweet, powdery, clean

  • Iso E Super

    Aroma chemical · Woody / Amber — woody, velvety, amber, cedar

Used in formulas and accords

Used in 3 published formulas

Traseolide is an ingredient in 2 perfume formulas and 1 accord in the Formula & Accord Library.

Community formulas

RUŌOD House Originals

Original compositions by RUŌOD House.

Further reading

Questions about Traseolide

Is Traseolide natural or synthetic?

Traseolide is synthetic — it is made by chemical synthesis.

What is the CAS number of Traseolide?

68140-48-7. It was checked against PubChem on 19 October 2026.

Which published formulas use Traseolide?

Traseolide is used in 3 published formulas in the RUŌOD Lab Formula & Accord Library: Jasmine Rice Accord, Pearl Brine and Wool Fog. Each is listed with a link under "Used in formulas and accords" on this page.

Sources

  • PubChem — compound 91696, checked 19 October 2026.
  • PubChem — GHS classification (the ECHA C&L Inventory notifications and any harmonised EU entry), read 26 October 2026.
  • Premiere Peau — Traseolide — published perfumery reference.
  • Fraterworks — Traseolide — distributor's description.
  • Olfactory profile: the RUŌOD Lab team's synthesis of the published descriptions above, reviewed 26 October 2026. Evidence: more than one published description. Classification and the short description: revision 1. Descriptions of odour are judgement, not measurement.

Your own records, next to the reference

Keep your own record of Traseolide — supplier, cost, stock, dilutions and where it is used — in RUŌOD Lab's material library.

The material library All materials