Tetrahydrofuran; Butane, 1,4-epoxy- ; Cyclotetramethylene oxide ; Furan, tetrahydro- (7CI, 8CI, 9CI) ; Furanidine ; Oxacyclopentane ; Oxolane ; POLYTETRAMETHYLENE ETHER GLYCOL ; Tetramethylene oxide ; THF ; 1,4-Epoxybutane ; 1,4-Epoxybutane Oxacyclopentane or Oxolane ; 1-Oxacyclopentan ; 2-Butenedioic acid (2Z)-, cyclohexyl 2-methylpropyl ester ; Furan, tetrahydro-; OSSACICLOPENTANO ; Oxacyclepenthane ; Oxacyclopentane ; OXOLANE ; PTG ; Terahydrofuran ; tetrahydrofuraan .