2(1H)-Naphthalenone, 3,4,4a,5,6,7-hexahydro-3,3,5,5-tetramethyl- 3,4,4a,5,6,7-Hexahydro-3,3,5,5-tetramethylnaphthalene-2(1H)-one 72927-89-0 EINECS 277-030-8