monoterpene terpenoid fundamental parent fenchane 1,3,3-trimethylbicyclo[2.2.1]heptane 138.24992 A monoterpene that is bicyclo[2.2.1]heptane substituted by methy groups at positions 1, 3 and 3. C10H18 CAS:6248-88-0 CC1(C)CC2(C)CCC1C2 CHEBI:36611 HINAOCRDJFBYGD-UHFFFAOYSA-N InChI=1S/C10H18/c1-9(2)7-10(3)5-4-8(9)6-10/h8H,4-7H2,1-3H3 LIPID_MAPS_instance:LMPR0102120027 PMID:20734952 chebi_ontology fenchane carbobicyclic compound