Santalum austrocaledonicum Vieill., native to New Caledonia and Vanuatu, produces a heartwood essential oil whose primary constituents are (Z)-a-santalol and (Z)-β-santalol—the same sesquiterpene alcohols responsible for the characteristic odour and bioactivity of East Indian sandalwood (S. album)—though with elevated levels of (Z)-lanceol that distinguish its profile.^[1] Substantial tree-to-tree variation in santalol content has been documented in wild Vanuatu populations, with only ~19% of surveyed trees meeting ISO minimum thresholds for a- and β-santalol, underscoring the importance of provenance selection for commercial oil quality.^[1]