cis-6-Nonen-1-ol, commonly known as cis-6-Nonenol or Melon Alcohol, is one of the most beloved and recognizable materials for creating melon nuances in the flavor-and-fragrance industry. Its full chemical name is (Z)-6-Nonen-1-ol, and it occurs naturally as an important component contributing to the characteristic aroma of ripe cantaloupe, watermelon, cucumber, fresh pumpkin, and even violet leaves.
In nature, cis-6-Nonenol is found in fruits of the Cucurbitaceae family and in violet leaves. However, to meet industrial demand for high purity and consistent supply, it is mainly produced synthetically, typically via selective hydrogenation from alkyne derivatives.
In appearance, it is a clear, slightly viscous, completely colorless liquid. Its odor is extremely vivid: ripe, juicy cantaloupe flesh; crisp cucumber freshness; tender young pumpkin-layered with a faint waxy feel and a smooth, creamy fattiness. This makes it stand out from many other “melon” synthetics that often smell more “watery” than “fleshy.”
Description
This material radiates a very strong Green–Fruity character and often functions as a key modifier, contributing prominently from the top into the heart. It has high impact and good diffusion, while its tenacity is only moderate-evaporating faster than short-chain aldehydes, yet still clinging noticeably better than many light fruity notes.
Because it can recreate the soft, sweet, slightly fatty “fruit flesh” of ripe melon with near-perfect realism, cis-6-Nonenol becomes indispensable when building true-to-life cantaloupe/muskmelon, watermelon, or natural cucumber accords. It is also an important piece in artificial violet leaf constructions (often paired with 2,6-Nonadienal), and it adds a moist, refreshing, dewy facet to watery florals such as lotus or water lily.
Some classic pairings often seen in formulas include:
cis-6-Nonenol + 2,6-Nonadienal → an exceptionally vivid, natural cucumber and violet leaf effect.
cis-6-Nonenol + Ionone → builds a violet accord that is both powdery and lushly green.
cis-6-Nonenol + Helional → boosts a plump, juicy “watermelon-like” freshness.
Because the odor is very powerful and distinctive, perfumers often pre-dilute cis-6-Nonenol to 1% or 10% in DPG or ethanol to control dosage more easily and avoid a cloying, overly vegetal/pumpkiny dominance.
Applications
Its uses span fine fragrance (Floral Aquatic, Green, Fruity), food flavoring (soft drinks, candies, ice cream in cantaloupe/cucumber/watermelon styles), and cosmetics (lotions, masks with a cooling, relaxing cucumber scent). In perfumery, typical usage is around 0.1% to 1% of the formula-overdosing can push the scent toward raw pumpkin or an unpleasant waxy character.
It is generally regarded as safe (including GRAS use contexts for food and cosmetics), has low irritation potential, and is not currently subject to strict IFRA limitation (though it is still best practice to check the most recent IFRA update). For storage, keep it in a tightly closed bottle in a cool, dry place away from direct light to maintain long-term odor purity.
A few well-known fragrances that make excellent use of cis-6-Nonenol (or closely related Nonenol/Nonadienal materials) include Fahrenheit (Dior) with its striking violet leaf–cucumber contrast against leather and petrol facets; Be Delicious (DKNY), noted for juicy green apple with cucumber freshness; and L’Eau d’Issey (Issey Miyake), where melon nuances blend elegantly with lotus.
As Steffen Arctander described in Perfume and Flavor Chemicals: a “strong waxy-green odor, resembling melon… This alcohol produces powerful effects in violet bases, artificial violet leaf oil, cucumber and melon notes, helping create a natural freshness in floral and fruity fragrances.” The arrival of cis-6-Nonenol marked a turning point-moving perfumers from abstract “melon impressions” toward truly realistic recreations, paving the way for the fresh, aquatic, and light gourmand trends many people still love today.
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