2(3H)-Furanone, dihydro-4-methyl-5-pentyl- 33673-62-0 4-Methyl-5-pentyldihydro-2(3H)-furanone Dihydro-4-methyl-5-pentylfuran-2(3H)-one Dihydro-4-methyl-5-pentylfuran-2-one EINECS 251-629-4