2(3H)-Naphthalenone, 4,4a,5,6,7,8-hexahydro-3-methyl- 30297-14-4 4,4a,5,6,7,8-Hexahydro-3-methyl-2(3H)-naphthalenone 4,4a,5,6,7,8-Hexahydro-3-methylnaphthalene-2(3H)-one EINECS 250-115-7