Pomarose

Aroma chemical · Fruity / Floral

apple, plum, rosy, fruity — heart note.

Aroma illustration for Pomarose: red apples, plums and a red rose, for its apple, plum and rosy notes. It illustrates smell associations, not the material or its source.Skeletal formula of Pomarose ((2E,5Z)-5,6,7-Trimethylocta-2,5-dien-4-one), C11H18O, drawn from PubChem's 2D record. Stereochemistry is not shown.
Aroma View: an illustration of what Pomarose smells like (apple, plum, rosy), drawn by RUŌOD Lab — not its appearance or its source.Skeletal formula drawn by RUŌOD Lab from PubChem's 2D record (CID 11030204). Stereochemistry is not shown; the coloured background is decoration.
Images

By the RUŌOD Lab TeamRevision 1Updated

In short

Pomarose is a trade name for an unsaturated ketone with a powerful fruity-rose odour. Its character sits between apple, plum and the rose ketones.

What Pomarose smells like

Pomarose (Givaudan) has, per Wikipedia, a powerful fruity rose odour with nuances of apples, plums and raisins, almost entirely due to one of its stereoisomers, and a very low odour threshold. The Good Scents Company lists fruity rose, dried apple, plum, raisin and dried fruit. Descriptions of its apple differ — cooked, dried, green or pear-like. It was discovered from a trace component with a damascone odour, and perfumers value it for a damascone-like effect with fewer restrictions.

Leading note
Fruity rose
Clear facets
Dried apple
Supporting facets
Plum, raisin
Character
Fruity, powerful, warm, jammy
  • apple
  • plum
  • rosy
  • fruity

What makes Pomarose distinctive

Dried fruit and rose: a damascone-type effect built around apple, plum and raisin, usable where damascones are tightly capped.

Where the descriptions disagree: Its apple is described variously as cooked, dried, green-tart or pear-like.

How Pomarose is used

Used in fruity-rose and fruity compositions as a powerful damascone-like note.

Typical role: modifier (used in small amounts to change the character of a blend).

How Pomarose differs from similar materials

beta-Damascenone
Damascenone is warmer, honeyed and baked; Pomarose is a dried-fruit rose with apple, plum and raisin.
alpha-Damascone
Perfumers use Pomarose for a damascone-like effect with fewer restrictions; alpha-damascone is greener, with mint and blackcurrant. (compared directly by a cited source)

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

Covered by an IFRA Standard; check the limit for your product category. Very potent; dose from dilution.

Identity and classification

Type
Aroma chemical
Origin
Synthetic
Odour family
Fruity / Floral
Note position
Heart note
Physical form at room temperature
Liquid
Also known as
(2E,5Z)-5,6,7-Trimethylocta-2,5-dien-4-one
CAS number
357650-26-1
Molecular formula
C11H18O
Molecular weight
166.26 g/mol
IUPAC name
(2E,5Z)-5,6,7-trimethylocta-2,5-dien-4-one

The CAS number, formula and molecular weight are taken from PubChem compound 11030204, whose own record lists this CAS number; checked 19 October 2026.

Safety and compliance

The IFRA Standards Library lists a Standard covering Pomarose:

  • "2,5-Octadien-4-one, 5,6,7-trimethyl-, (2E)-" — Restriction, 51st Amendment, published 2023-06

Limits differ by product category and are set out in the Standard itself; this page does not reproduce them. The list above reflects the library as read on 19 October 2026.

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

Used in formulas and accords

Used in 2 published formulas

Pomarose is an ingredient in 1 perfume formula and 1 accord in the Formula & Accord Library.

RUŌOD House Originals

Original compositions by RUŌOD House.

Further reading

Questions about Pomarose

Is Pomarose natural or synthetic?

Pomarose is synthetic — it is made by chemical synthesis.

What is the CAS number of Pomarose?

357650-26-1. It was checked against PubChem on 19 October 2026.

Which published formulas use Pomarose?

Pomarose is used in 2 published formulas in the RUŌOD Lab Formula & Accord Library: Bright Resin Accord and Citrus Censer. Each is listed with a link under "Used in formulas and accords" on this page.

Is Pomarose covered by an IFRA Standard?

Yes. The IFRA Standards Library lists a Standard covering it: "2,5-Octadien-4-one, 5,6,7-trimethyl-, (2E)-" — Restriction, 51st Amendment. The limits depend on the product category; read the Standard itself before formulating.

Sources

Your own records, next to the reference

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