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Aldehyde C-14 (Peach)

Q: Is Aldehyde C-14 (Peach) natural or synthetic?

. Extraction: Fully synthetic. Despite natural occurrence in peach, perfumery material is synthetic for consistency..

POPULAR AND WEIRD / fruity · creamy · lactonic

Category	POPULAR AND WEIRD
Subcategory	fruity · creamy · lactonic
Origin
Volatility	Top Note / Heart Note
Botanical	N/A — synthetic molecule (gamma-undecalactone)
Appearance	colorless to pale yellow clear oily liquid
Producing Countries	N/A — synthetic (manufactured globally)
Pyramid	Top-Heart

Creamy, peach-skin, lactonic. Gamma-undecalactone (not an aldehyde) is the defining peach molecule: fuzzy, warm, slightly coconut.

Scent
The Full Story
Fun Fact
Extraction & Chemistry
In Perfumery

Scent

Creamy, warm, peach-skin. The fuzzy quality of a ripe peach held in warm hands. More skin than flesh. A coconut undertone connects it to tropical compositions.

Evolution over time

Immediately

Creamy peach-skin burst, warm and fuzzy

After a few hours

Lactonic warmth, coconut undertone

After a few days

Persistent creamy-fruity warmth, skin-close

The Full Story

Aldehyde C-14 (gamma-undecalactone, CAS 104-67-6) is not an aldehyde but a gamma-lactone. Historical misnomer. It is the molecule most associated with ripe peach skin: creamy, warm, fuzzy, with coconut-lactonic undertone.

Bridges fruity and musky families. Essential in peach, apricot, and creamy-fruity accords. Also appears in tropical, coconut-adjacent, and skin-scent compositions.

This note in Première Peau. Rose Monotone. Sample all seven extraits in the Discovery Set.

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Related: Apricot · Black Cherry · Burning Cherry · Cherry · Dark Plum Wu Mei · Gamma Decalactone · Green Plum · Ground Cherry

Did You Know?

Did you know?

Aldehyde C-14 is neither an aldehyde nor a C-14 molecule. It is gamma-undecalactone, an eleven-carbon lactone. The misnomer persists from before modern nomenclature was standardized.

Extraction & Chemistry

Extraction method: Fully synthetic. Despite natural occurrence in peach, perfumery material is synthetic for consistency.

Molecular Formula	C11H20O2
CAS Number	104-67-6
Botanical Name	N/A — synthetic molecule (gamma-undecalactone)
IFRA Status	No known restrictions
Synonyms	GAMMA-UNDECALACTONE · PEACH ALDEHYDE · ALDEHYDE C14
Physical Properties
Lasting Power	338 hour(s) at 100.00 %
Appearance	colorless to pale yellow clear oily liquid
Boiling Point	164.00 to 166.00 °C. @ 13.00 mm Hg
Flash Point	200.00 °F. TCC ( 93.33 °C. )
Specific Gravity	0.94200 to 0.94500 @ 25.00 °C.
Refractive Index	1.44800 to 1.45300 @ 20.00 °C.

In Perfumery

Heart-to-base fruity modifier. CAS 104-67-6 (gamma-undecalactone, not an aldehyde). Essential in peach, apricot, and creamy-fruity accords. Bridges fruity and musky families.