2-(Isopropyl)-5,5-dimethyl-1,5-pentanolide 2H-Pyran-2-one, tetrahydro-6,6-dimethyl-3-(1-methylethyl)- 67674-35-5 EINECS 266-873-7 Tetrahydro-6,6-dimethyl-3-(1-methylethyl)-2H-pyran-2-one