1-(2,3,4,7,8,8a-Hexahydro-3,6,8,8-tetramethyl-1H-3a,7-methanoazulen-5-yl)ethan-1-one 2,3,4,7,8,8a-Hexahydro-3,6,8,8-tetramethyl-5-acetyl-1H-3a,7-methanoazulene 68039-35-0 9-Acetyl-2,6,6,8-tetramethyltricyclo(5.3.1.01,5)undec-8-ene EINECS 268-253-1 Ethanone, 1-(2,3,4,7,8,8a-hexahydro-3,6,8,8-tetramethyl-1H-3a,7-methanoazulen-5-yl)-