.gamma.-Butyl-.gamma.-butyrolactone .gamma.-Butylbutyrolactone .gamma.-N-Butyl-.gamma.-butyrolactone .gamma.-Octalactone .gamma.-Octanolactone 104-50-7 2(3H)-Furanone, 5-butyldihydro- 2(3H)-Furanone, dihydro-5-butyl- 4-Butyl-.gamma.-butyrolactone 4-Hydroxyoctanoic acid lactone 4-Hydroxyoctanoic acid, .gamma.-lactone 4-Octanolide 5-Butyltetrahydro-2-furanone 8-Oxo-5-octanolide NSC26509 Octanoic acid, .gamma. lactone Octanoic acid, 4-hydroxy-, .gamma.-lactone Octanolide-1,4 WLN: T5OVTJ E4