Constituent · Sesquiterpene hydrocarbon
germacrene d
A common sesquiterpene hydrocarbon with a mild woody character, widespread across plant oils.
Essential oils richest in germacrene d
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 |
|---|---|---|---|---|
| Cedarwood | 18.3% | 18.3%–18.3% | 18.3% | 1 |
| Clary sage | 12.41% | 10.51%–14.3% | 16.2% | 2 |
| Coriander | 11.35% | 9.23%–13.48% | 15.6% | 2 |
| Goldenrod | 10.4% | 8.25%–25.06% | 48.7% | 7 |
| Ylang ylang | 5.8% | 3.55%–10.38% | 19.25% | 17 |
| Rosemary | 5.16% | 2.79%–7.53% | 9.9% | 2 |
| Oregano | 4.66% | 2.88%–6.3% | 12.6% | 5 |
| Copaiba | 4.29% | 4.07%–5.31% | 17.99% | 15 |
| Wormwood | 3.68% | 2.47%–4.77% | 4.88% | 6 |
| Hyssop | 3.63% | 3.23%–4.04% | 4.76% | 13 |
| Spearmint | 2.55% | 0.79%–5.09% | 8.26% | 29 |
| Juniper | 2.35% | 1.05%–3.5% | 12.3% | 26 |
| Myrrh | 2.35% | 1.1%–3.1% | 5% | 7 |
| Petitgrain | 2.31% | 0.87%–4.61% | 7.99% | 4 |
| Tarragon | 2.2% | 2.2%–2.2% | 2.2% | 1 |
| Myrtle | 1.97% | 0.95%–2.63% | 2.95% | 6 |
| Palmarosa | 1.96% | 1.96%–1.96% | 1.96% | 1 |
| Cinnamon bark | 1.82% | 1.29%–2.02% | 2.5% | 11 |
| Lemon | 1.6% | 1.6%–1.6% | 1.6% | 1 |
| Basil | 1.53% | 0.87%–2% | 6.8% | 122 |
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 →