1,5a,6,9,9a,9b-Hexahydro-4a(4H)-dibenzofurancarboxaldehyde 126-15-8 2,3,4,5-Bis(.DELTA.2-butenylene)tetrahydrofurfural 2,3,4,5-Bis(.DELTA.2-butylene)tetrahydrofurfural 2,3,4,5-Bis(.delta.-2-butylene)tetrahydrofurfural 2,3,4,5-Bis(2-butenylene)tetrahydrofurfural 2,3,4,5-Bis(2-butylene tetrahydrofurfural) 2,3,4,5-Bis(2-butylene)tetrahydro-2-furaldehyde 2,3,4,5-Bis[.delta.(sup 2)butenylene]tetrahydrofurfural 2,3,4,5-Bis[.delta.(sup 2)butylene]tetrahydrofurfural 2,3:4,5-Bis(2-butene-1,4-diyl)tetrahydrofurfural 2,3:4,5-Di(2-butenyl)tetrahydrofurfural 2-Furaldehyde, 2,3:4,5-bis(2-butenylene)tetrahydro- 2-Furancarboxaldehyde, 2,3:4,5-bis(2-butene-1,4-diyl)tetrahydro- 4,5-Di(2-butenyl)tetrahydrofurfural 4a(4H)-Dibenzofurancarboxaldehyde, 1,5a,6,9,9a,9b-hexahydro- 4a-Formyl-1,4,4a,5a,6,9,9a,9b-octahydrodibenzofuran Bis[.delta.(sup 2)butylene]tetrahydrofurfural Bisbutenylenetetrahydrofurfural Butadien-furfural copolymer Dibutylene tetrafurfural ENT 17,596 MGK 11 MGK Repellent 11 MGK Repellent II MGK repellent R-11 NSC52965 Phillips r-11 R 11 (insect repellent) R-11 WLN: T B656 HO DU KUTJ GVH ac-r-11