ChEBI: Alpha-muurolene is a sesquiterpene that is 1,2,4a,5,6,8a-hexahydronaphthalene which is substituted at position 1 by an isopropyl group and at positions 4 and 7 by methyl groups (the 1S,4aS,8aR-diastereoisomer). It is a sesquiterpene and a carbobicyclic compound.