1,1,3,3,5-Pentamethylindan-6-yl propenyl ketone 1-(2,3-Dihydro-1,1,3,3,6-pentamethyl-1H-inden-5-yl)-2-buten-1-one 2-Buten-1-one, 1-(2,3-dihydro-1,1,3,3,6-pentamethyl-1H-inden-5-yl)- 68298-34-0 EINECS 269-557-7