ChEBI: Alpha-cadinene is a cadinene sesquiterpene that consists of 1-(propan-2-yl)-1,2,4a,5,6,8a-hexahydronaphthalene having two methyl substituents at positions 1 and 4 (the 1S,4aS,8aS-configuration). It has a role as a volatile oil component. It is a cadinene and a member of hexahydronaphthalenes.