Aldehyde C-14 Peach, also known as Gamma Undecalactone (CAS# 104-67-6), is a key material in the fruity lactone family, bringing a signature ripe peach note that is sweet, creamy and velvety. It evokes the impression of juicy peach flesh and smooth peel, with subtle nuances of apricot, milky facets and a soft fatty undertone that reinforce a realistic, mouthwatering stone-fruit effect.
In perfumery, Gamma Undecalactone is widely used to build peach, apricot, plum and various tropical fruit accords, as well as to soften and round floral themes – especially jasmine, orange blossom, ylang-ylang and other white florals. At low dosage, it provides a gentle fruity halo that makes floral compositions more friendly, modern and diffusive; at higher levels in gourmand or fruity concepts, it amplifies nectar-like richness, giving the fragrance a luscious, almost edible texture.
This ingredient has considerable odor strength, so it is typically dosed at low concentrations in the concentrate. Despite its power, Gamma Undecalactone remains smooth and non-harsh, blending easily with other lactones (creamy, coconut-type notes), ionones, vanillin, ethyl maltol, as well as the classic fruity palette including gamma-decalactone, damascones and traditional fruity esters.
Gamma Undecalactone performs well in alcoholic fine fragrances, body mists and personal care products with fruity–creamy character, and can also be used in home fragrance applications such as room sprays and scented waxes, depending on the solvent system and allowed dosage. It is considered an almost indispensable building block for perfumers working on modern peach–apricot signatures that are soft, approachable and highly commercial.
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