Constituent · Sesquiterpene hydrocarbon
δ-amorphene
δ-amorphene is a sesquiterpene hydrocarbon — a heavier, woody or spicy base-note compound that lingers longer than the light terpenes. Across our dataset it was measured in 14 oils (27 samples), concentrating most in Helichrysum, Citronella, Rosemary.
Essential oils richest in δ-amorphene
Measured relative composition (GC peak-area %) pooled across published GC-MS samples — median, typical range (middle 50%) and the maximum seen.
| Oil | Median | Typical range | Max | Samples |
|---|---|---|---|---|
| Helichrysum | 1.99% | 1.99%–1.99% | 1.99% | 1 |
| Citronella | 1.77% | 1.77%–1.77% | 1.77% | 1 |
| Rosemary | 1.51% | 1.51%–1.51% | 1.51% | 1 |
| Yarrow | 1.14% | 0.43%–1.95% | 2.09% | 6 |
| Geranium | 1% | 0.81%–1.19% | 1.38% | 2 |
| Cedarwood | 0.65% | 0.6%–0.69% | 0.73% | 2 |
| Manuka | 0.58% | 0.58%–0.58% | 0.58% | 1 |
| Valerian | 0.52% | 0.52%–0.52% | 0.52% | 1 |
| Oregano | 0.32% | 0.32%–0.32% | 0.32% | 1 |
| Cajeput | 0.22% | 0.22%–0.22% | 0.22% | 1 |
| Lime | 0.14% | 0.14%–0.14% | 0.14% | 1 |
| Laurel | 0.12% | 0.07%–0.18% | 0.27% | 7 |
| Cardamom | 0.1% | 0.1%–0.1% | 0.1% | 1 |
| Myrtle | 0.06% | 0.06%–0.06% | 0.06% | 1 |
Oils in our library are linked above — open any profile for its full composition, safety panel and the research behind it.
Related constituents
Other sesquiterpene hydrocarbon compounds across the oils.
Figures are GC peak-area percentages pooled across published GC-MS samples, not concentrations, and describe chemistry — not health effects. How this is built →