Synonyms: Tricyclo(5.2.1.02,6)dec-3(or 4)-ene, 8-(3-hydroxybutylidene)-;2-Butanol, 4-(1,3a,4,6,7,7a-hexahydro-4,7-methano-5H-inden-5-ylidene)-;125542-76-9;126646-14-8;2-Butanol, 4-(1,3a,4,6,7,7a(or 3,3a,4,6,7,7a)-hexahydro-4,7-methano-5H-inden-5-ylidene)-