Synonyms: 7H-2,4a-Methanonaphthalen-7-one,1,2,3,4,5,6-hexahydro-1,1,5,5-tetramethyl-, (2S)-;7H-2,4a-Methanonaphthalen-7-one, 1,2,3,4,5,6-hexahydro-1,1,5,5-tetramethyl-,(2S,4aR)-(-)- (8CI); (-)-9-Oxoisolongifolene; (-)-Isolongifolen-9-one;(-)-Isolongifolenone; 9-Oxoisolongifolene; Isolongifolen-9-one;Isolongifolenone