The smell of sandalwood stripped clean — no dust, no incense smoke, just the creamy, milky heartwood note with a transparent rose-petal edge. Javanol is a synthetic cyclopropyl alcohol that outperforms every other sandalwood substitute on the market in both potency and tenacity: its odor threshold sits at 0.02 parts per trillion.
Creamy-woody, milky, with an insistent rosy-floral undertone that distinguishes it from all other sandalwood synthetics. Less buttery and less urinous than natural Mysore sandalwood oil. Cleaner and more transparent than Ebanol, which carries a drier, more cedarwood-adjacent character. Warmer and more natural-smelling than Polysantol, which tends toward a sharper, more metallic woody note. At full concentration, Javanol is oddly quiet — its power only unfolds on dilution, where the creamy radiance expands outward like body heat. On skin, it merges with the wearer’s chemistry and becomes nearly invisible as a discrete note, functioning as an amplifier of warmth rather than a projecting scent.
Evolution over time
Immediately
Immediately
Faint, almost subliminal — a pale milky sweetness with a brief citrus-like sparkle, more sensation than scent. The cyclopropane rings release slowly.
After a few hours
After a few hours
The sandalwood character materialises: creamy, rosy-woody, warm. Less woody than Ebanol, less metallic than Polysantol. Merges with skin chemistry and becomes difficult to distinguish from the wearer's own warmth.
After a few days
After a few days
On fabric, a persistent creamy-woody trace lingers for days. The rosy facet fades first; what remains is pure milky warmth — sandalwood reduced to its essence.
The Full Story
Javanol (CAS 198404-98-7, MW 222.37 g/mol, C₁₅H₂₆O) is a tertiary cyclopropyl alcohol derived from campholenic aldehyde. Systematic name: [1-methyl-2-[(1,2,2-trimethylbicyclo[3.1.0]hex-3-yl)methyl]cyclopropyl]methanol. It was discovered in 1996 by chemists Jerzy Bajgrowicz and Georg Frater at a Swiss fragrance laboratory, first disclosed in U.S. Patent 5,707,961 (filed April 1996, granted January 1998), and introduced to perfumers in 1997.
The molecule features two fused cyclopropane rings that replace the reactive double bonds found in earlier sandalwood synthetics. This rigid, electron-rich framework confers extraordinary chemical stability — Javanol survives all standard applications except strong acid cleaners and bleach — and an odor threshold of approximately 0.02 ppt (parts per trillion), roughly 400 times lower than Pashminol, its nearest analogue. The commercial product is a mixture of diastereomeric isomers arising from multiple asymmetric carbon centres.
Synthesis starts from α-pinene, a renewable terpene isolated from turpentine. Acid-catalysed isomerisation of α-pinene oxide yields campholenic aldehyde, which is elaborated to 2-methyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol. The key step is a double Simmons–Smith cyclopropanation using zinc/copper and diiodomethane, converting both double bonds into cyclopropane rings in a single operation. The result is the bicyclic alcohol skeleton that defines Javanol’s olfactory character.
Olfactively, Javanol reads as a close synthetic approximation of β-santalol — the principal odor-active sesquiterpenol in East Indian sandalwood oil (sandalwood). Where β-santalol is warm, milky, and urinous at high concentrati on, Javanol is cleaner: creamy-woody with a particular rosy-floral quality and a faint citrus-like sparkle on the top. Substantivity exceeds 400 hours on blotter — significantly outperforming natural sandalwood oil.
This note in Première Peau. Albâtre Sépia · Doppel Dänçers · Gravitas Capitale · Insuline Safrine · Nuit Elastique · Simili Mirage. Sample all seven extraits in the Discovery Set.
Leopold Ruzicka proved in 1926 that macrocyclic rings larger than 8 carbons could exist — overturning Baeyer's strain theory — while working on musk ketone (muscone). Seventy years later, in 1996, two chemists at the same Swiss institution's successor company used a different ring strategy (cyclopropanation, not macrocyclisation) to create Javanol, arguably the among the strongest sandalwood odorants developed synthesised. Its odor threshold of 0.02 parts per trillion makes it detectable at a concentration roughly equivalent to one drop dissolved in 20 Olympic swimming pools.
Extraction & Chemistry
Extraction method: Fully synthetic. Starting material: alpha-pinene, a renewable monoterpene from turpentine oil. Route: (1) acid-catalysed isomerisation of alpha-pinene oxide to campholenic aldehyde; (2) aldol condensation and reduction to build the allylic alcohol intermediate 2-methyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol; (3) double Simmons-Smith cyclopropanation using zinc/copper catalyst and diiodomethane (CH2I2), converting both olefinic double bonds into cyclopropane rings in a single step. First disclosed in U.S. Patent 5,707,961 (Bajgrowicz and Frater, filed 1996, granted 1998). Commercial product is a mixture of diastereomeric isomers. Product form: colorless to pale yellow viscous liquid, refractive index 1.482–1.487 at 20 degrees C, specific gravity ~0.99 at 25 degrees C.
Molecular Formula
C₁₅H₂₆O
CAS Number
198404-98-7
Botanical Name
N/A — synthetic molecule
IFRA Status
No specific IFRA standard identified for Javanol. Not listed as restricted or prohibited under the IFRA 51st Amendment (June 2023). The molecule contains no known sensitisers, is not phototoxic, and shows favourable biodegradability. Widely used without usage-level restrictions in commercial perfumery.
Synonyms
SANDAL CYCLOPROPANE · [1-METHYL-2-[(1,2,2-TRIMETHYLBICYCLO[3.1.0]HEX-3-YL)METHYL]CYCLOPROPYL]METHANOL · JAVANOL SUPER (enriched isomer grade)
Physical Properties
Odor Strength
High
Lasting Power
400 hours at 100.00%
Appearance
colorless to pale yellow viscous liquid
Boiling Point
270.42 °C. @ 760.00 mm Hg (est)
Flash Point
277.00 °F. TCC ( 136.11 °C. )
In Perfumery
Heart-to-base fixative, radiance builder, sandalwood backbone. Javanol does not project loudly — it radiates from the skin, amplifying neighbouring notes while adding creamy, milky warmth. Its odor threshold of 0.02 ppt makes it effective at vanishingly small doses: 0.02–0.1% of a formul a for radiance enhancement, 0.5–2% for primary sandalwood character, up to 20% in specialised sandalwood soliflores. The molecule is roughly 8 times more effective than competing sandalwood synthetics in fabric wash-retenti on tests — a critical metric for functional perfumery (detergents, softeners). Structurally important in modern orientals, woody-ambers, creamy florals, and sandalwood soliflores. It replaces or extends natural sandalwood oil (now scarce and expensive due to slow Santalum album growth — 30+ years to heartwood maturity). Compared to Ebanol (drier, more cedarwood-like), Javanol brings a rosy-milky character closer to bet a-santalol. Compared to Polysantol (sharper, more metallic), it is warmer and more skin-like. The complete absence of double bonds in its structure means it will not oxidise or polymerise in formul a, unlike many older sandalwood synthetics. Javanol Super, a related quality of the same molecule, emphasises lactonic-cedarwood qualities over the rosy-powdery character of standard Javanol.
