1-(5,6,7,8-Tetrahydro-3,5,5,8,8-pentamethyl-2-naphthyl)ethan-1-one 17610-24-1 5',6',7',8'-Tetrahydro-3',5',5',8',8'-pentamethyl-2'-acetonaphthone EINECS 241-585-4 Ethanone, 1-(5,6,7,8-tetrahydro-3,5,5,8,8-pentamethyl-2-naphthalenyl)-