2H-Pyran-2-one, 5-butyl-5-ethyltetrahydro- 2H-Pyran-2-one, tetrahydro-5-(n-butyl)-5-ethyl- 4-Ethyl-4-butyl-delta-valerolactone 5-Butyl-5-ethyltetrahydro-2H-pyran-2-one 67770-79-0 EINECS 267-048-4 Ethyl butyl valerolactone