Undecavertol
Редакційна приміткаМи не маємо жодних прав на цей матеріал, його назву чи торговельну марку. Ця стаття глосарію є незалежною редакційною журналістикою й опублікована на підставі свободи вираження поглядів.
Crushed violet leaves on a wet garden path, but colder and cleaner than the absolute — a dewy metallic green with no wax, no warmth. Undecavertol is a synthetic allylic alcohol (4-methyldec-3-en-5-ol, CAS 81782-77-6) engineered to isolate the transparent, rain-washed quality of violet leaf while discarding its heaviness.
- Type
- Складник
- Olfactive family
- Ароматичні
- Source
- synthetic molecule
- Chemical class
- alcohol (aliphatic unsaturated)
Запах
Докладно
Цікавий факт
Undecavertol has two sources of stereoisomerism: a chiral centre at C-5 (the carbon bearing the hydroxyl group) and an E/Z geometric isomerism at the C-3/C-4 double bond. This means the commercial material is potentially a mixture of up to four stereoisomers, each with a slightly different odour profile. The ratio of isomers in the commercial product — and whether the supplier sells a specific isomer or a mixture — is proprietary information.
Отримання й хімія
Спосіб отримання
Fully synthetic. No natural source exists — the molecule does not occur in nature in isolable quantities. Undecavertol (4-methyldec-3-en-5-ol) is manufactured via industrial organic synthesis. The exact commercial route is proprietary. General approaches to allylic alcohols of this type involve base-catalysed aldol condensation or organometallic addition of a vinyl Grignard reagent to a suitable aldehyde. The molecule has 11 carbons, one hydroxyl group, and one trisubstituted double bond (C-3/C-4). It is a captive ingredient — available exclusively from its originating manufacturer.
- Формула
- C₁₁H₂₂O (MW 170.29) — 4-methyldec-3-en-5-ol
- CAS
- 81782-77-6
- Ботанічна назва
- N/A — synthetic molecule (no natural source)
- Зовнішній вигляд
- Pale yellow to yellow clear liquid
- Сила запаху
- середня
- Стійкість
- 31 hour(s) at 100.00 %
- Синоніми
- UNDECAVERTOL 4-METHYL-3-DECEN-5-OL 3-DECEN-5-OL, 4-METHYL-
No restriction under the IFRA 51st Amendment (2023). Undecavertol is not listed as a restricted, prohibited, or specified ingredient. Individual batch purity and allergen content should be confirmed with the supplier.
- Температура кипіння
- 255.00 to 256.00 °C. @ 760.00 mm Hg
- Температура спалаху
- 208.00 °F. TCC ( 97.78 °C. )
- Відносна густина
- 0.84200 to 0.84700 @ 25.00 °C.
- Показник заломлення
- 1.45200 to 1.45900 @ 20.00 °C.
У парфумерії
Top-to-heart modifier, positioned in the green-fresh register. Undecavertol provides controlled violet-leaf character without the waxy density or batch variability of the natural absolute. Its advantage is precision: it delivers the dewy, metallic-green quality of Viola odorata foliage at exact concentrations, without carrying the heavy, slightly phenolic undertones that make violet leaf absolute difficult to dose. Functionally, undecavertol is a lifting agent and blender. It pushes green accords into sharper focus, adds vegetal freshness to white florals, and sharpens citrus openings with a leafy counterpoint. It sits comfortably in chypre constructions (bridging bergamot and oakmoss), in green-floral hearts (alongside galbanum, cis-3-hexenol, and hedione), and in modern aquatic-green compositions where clean transparency matters more than naturalistic complexity. The molecule is a captive — a proprietary creation available only from its originating supplier. This limits its use to perfumers with access to that supplier's palette, which partly explains why undecavertol appears in a relatively narrow range of commercial formulations despite its technical usefulness. Key comparisons: drier and more metallic than violet leaf absolute; less aggressive than methyl 2-octynoate (methyl hept in carbonate); greener and less resinous than galbanum; less waxy than cis-3-hexenyl salicylate. Substantivity is moderate at 31 hours (TGSC, 100% concentration), giving it genuine heart-note presence — unusual for a green material. No confirmed presence in the current PREMIEREPEAU collection.
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